Unable to access my Outlook/hotmail email account. Error 401- RESOLVED

TeresaM 370

Something is wrong with my personal email account, as other members of my family are able to access their Outlook email accounts. When I try to log on to Outlook (hotmail) on my phone or on my PC, I receive the following error message. I need to be able to access my emails. Please advise on how I can resolve this. I have already reset my password and cleared my cache and history.

UTC Date: 2025-07-10T05:33:04.707Z
Client Id: 8798D6BD74FF43679B325E07B4F542E7
Session Id: 85f3e46d-11d3-463d-bf21-b26d2fb91ceb
Client Version: 20250620014.20
BootResult: fail
Back Filled Errors: Unhandled Rejection: Error: 401:undefined|undefined:undefined
err: Error: 401
esrc: StartupData
et: ServerError
estack: Error: 401
    at Object.w [as createStatusErrorMessage] (https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mailindex.ad3a7e4e.js:1:1039)
    at https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mailindex.ad3a7e4e.js:1:161561
st: 401
efe: PH8PR20CA0019

Locked Question. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.

TeresaM 370 Reputation points

2025-07-10T05:52:55.2166667+00:00

This is not a business account, but that was the only required drop down for the type of account. This is for a personal email account.
AndreyG 26 Reputation points

2025-07-10T08:29:07.77+00:00

Same. Outlook stopped working today in Gmail app Android, and in any browser on Windows. OneDrive, MS account access and other stuff works as usual. Outlook Lite Android app stopped working days before (stuck on splash screen).
Gillian Mundy 35 Reputation points

2025-07-10T08:32:23.9666667+00:00

hi did you get this resolved ?, this has happened to me
Hannah 20 Reputation points

2025-07-10T08:40:38.8433333+00:00

I'm having the same issue, tried different browsers, incognito/private modes, different devices and nothing works. How can this be fixed as this is a really important email account for me
Rusty Admin 15 Reputation points

2025-07-10T08:51:35.36+00:00

received microsoft updates KB5056579 KB5062553 power toys 0.92.1

outlook mail app no longer works

cannot connect to outlook mail with thunderbird, edge, firefox, chrome

error:401

sfc scannow and dism scanhealth report no errors

reboot - still not working

I CAN connect to my microsoft account
s d 0 Reputation points

2025-07-10T09:04:39.8266667+00:00

i have the same issue- just today. Cant access outlook even though i can login into my MS account. The same Error 401.
Tracy 0 Reputation points

2025-07-10T09:12:15.1666667+00:00

Same here, I have been trying to log into my email account and receive the error 401 unhandled rejection.

I can get into onedrive and log into my laptop, maybe its a problem with microsoft today?
Tracy 0 Reputation points

2025-07-10T09:20:20.5966667+00:00

Theresa, I have exactly the same message
JLmo 15 Reputation points

2025-07-10T09:32:37.0333333+00:00

I'm getting same issue. Outlook was working fine yesterday before windows update. Since this morning, post update, i haven't been able to get past the 401 error page on any device. I have tried clearing cache and cookies and resetting password. The Live/Microsoft account page logs in fine, it only seems to be outlook that's having authentication problems. It's really frustrating me. They better fix this soon.
CB 5 Reputation points

2025-07-10T09:33:50.9633333+00:00

Same problem here, only for 1 Hotmail-account, the others work fine. What should we do the get access again?
Kristie Sumner 0 Reputation points

2025-07-10T09:35:50.17+00:00

Having the same problem since about midday today. Cannot get my emails at all. Have tried multiple devices with no luck. All other Microsoft products seems to be working fine. My husband's emails are fine and still working.

JLmo 15

UPDATE: Now getting a 500 error. Please refresh page. Details:



clientIPAddress ****
X-ClientId: ****
X-Auth-Error System.Runtime.InteropServices.COMException
X-FEServer SYAPR01CA0019
X-BEServer OSCPR01MB15016
Date:10/07/2025 9:38:33

Londa 5 Reputation points

2025-07-10T09:46:48.29+00:00

I'm having the same issue, I cannot get any emails, I've change my pw, reset my computer nothing works
echo cai 5 Reputation points

2025-07-10T09:47:15.9+00:00

same issue here, personal email doesn't work today, on phone keeps asking password, on computer just doesn't load
Rab Chestnutt 0 Reputation points

2025-07-10T09:49:28.13+00:00

Same issue, cannot login to email via Outlook app or Internet browser
CH 0 Reputation points

2025-07-10T09:57:44.13+00:00

Did anyone get a resolution to this as I am having the same issue?

Steven Brown 5

Same here - no e-mails since last night. Tried iPhone outlook app, outlook.com on multiple pc's

same result....

UTC Date: 2025-07-10T10:09:11.714Z
Client Id: FC9725A5EEFA473B9D556FB5B641DBA3
Session Id: 5d741afa-a65f-48e7-9938-3da93bddcb16
Client Version: 20250704003.04
BootResult: fail
Back Filled Errors: Unhandled Rejection: Error: 401:undefined|undefined:undefined
err: Error: 401
esrc: StartupData
et: ServerError
estack: Error: 401
    at Object.w [as createStatusErrorMessage] (https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mailindex.5ec1239e.js:1:1039)
    at https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mailindex.5ec1239e.js:1:163185
st: 401
efe: YT3PR01CA0021

miguel abelleira abelleira gonzalez 0 Reputation points

2025-07-10T10:30:53.9133333+00:00

From what I've been able to see, it's a global problem. Until Microsoft deigns to offer a response, the only thing to do is wait for it to resolve on its own. The more noise there is, the better. I've done some searches and so far, nowhere is there any talk of problems with Outlook.
Elpida K 0 Reputation points

2025-07-10T10:56:31.1133333+00:00

Exactly the same to me
P T 5 Reputation points

2025-07-10T11:15:01.27+00:00

I'm having the same issue in Spain. Can't connect via web site on computer or phone (Chrome, Edge, Duckduckgo), or via app on phone. I assumed I'd done something wrong until I saw all these messages.

However, I was able to join this forum (first time ever) using the same address, no sign in required.
Yvonne Sharples 0 Reputation points

2025-07-10T13:05:27.5066667+00:00

Just another user with the same issue:

UTC Date: 2025-07-10T12:58:52.725Z Client Id: A2ECF7DDD110462FA96F8E93D7802FB9 Session Id: 1d5d274c-c501-47b3-81cc-6020305d4927 Client Version: 20250620014.20 BootResult: fail Back Filled Errors: Unhandled Rejection: Error: 401:undefined|undefined:undefined err: Error: 401 esrc: StartupData et: ServerError estack: Error: 401 at Object.w [as createStatusErrorMessage] (https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mailindex.ad3a7e4e.js:1:1039) at https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mailindex.ad3a7e4e.js:1:161561 st: 401 efe: MW4PR04CA0165
Jane9030 0 Reputation points

2025-07-10T13:19:34.5433333+00:00

Same problem here in Belgium. Hope to find solution soon!
Emma P 0 Reputation points

2025-07-10T13:55:36.9033333+00:00

Same issue here in the UK. I've been unable to access emails via browsers on mac desktop, or android phone all day. Incredibly frustrating, especially when expecting important emails from my children's school, log-in verifications, etc.
MichelleH 0 Reputation points

2025-07-10T14:02:42.01+00:00

This seems to be affecting a lot of people, I have the exact same issue. My last email was yesterday afternoon. I can't send either.
Patrick Chng 0 Reputation points

2025-07-10T14:07:00.6766667+00:00

I have the same problem too!
Kabous Byleveld 0 Reputation points

2025-07-10T14:15:45.12+00:00

Exactly the same problem MS is not getting back to me and its a paid account not a free account
Gabriel Szurma 0 Reputation points

2025-07-10T14:19:37.4433333+00:00

Same here in Toronto
Osman Ozdemir 0 Reputation points

2025-07-10T14:24:37.24+00:00

I have the same issue, i tried everything, from browser, PC i cannot log in, to my hotmail UTC Date: 2025-07-10T13:05:47.768Z Client Id: 6EFOB187120E4D20AAE5DADE3OD5F3C1 Session Id: 46a34a34-1b49-4e12-a154-13126405e8 Client Version: 20250704.04 BootResult: fail Back Filled Errors: None err: Error: 401 esrc: StartupData et: ServerErro estack: Error: 401

at Object.M [as createstatusErrorMessage] at https://res.public.onecdn.static.micros st: 401

efe: LOOP265CA0013
RICHARD DUDIAK 0 Reputation points

2025-07-10T14:27:56.0266667+00:00

I can’t access email what is the issue how can I get help
Donald Resor 1 Reputation point

2025-07-10T14:35:02.1466667+00:00

Same problem here as of this morning, I cannot retrieve my eBay saved searches via Outlook 2019 or the website interface.

I guess using a "free" email account should have been my first clue!

UTC Date: 2025-07-10T14:27:51.754Z

Client Id: 3156D7CE5E1C4CB7936F0DD8AE00EAB1

Session Id: d6e203aa-7c6d-41f5-8967-5feda9a9c839

Client Version: 20250620014.20

BootResult: fail

Back Filled Errors: Unhandled Rejection: SyntaxError: JSON.parse: unexpected character at line 1 column 1 of the JSON data:undefined|Unhandled Rejection: SyntaxError: JSON.parse: unexpected character at line 1 column 1 of the JSON data:undefined|Unhandled Rejection: Error: 401:undefined|Unhandled Rejection: SyntaxError: JSON.parse: unexpected character at line 1 column 1 of the JSON data:undefined|undefined:undefined|undefined:undefined|undefined:undefined|undefined:undefined

err: Error: 401

esrc: StartupData

et: ServerError

estack: w@https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mailindex.ad3a7e4e.js:1:1039

S/</<@https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mailindex.ad3a7e4e.js:1:161561

st: 401

efe: SJ0PR03CA0063
PauloMarceloVareladeOliveira-0430 5 Reputation points

2025-07-10T14:38:41.74+00:00

I'm having the same issue on my computer and my phone. On my phone, I can submit a request to the authenticator and get approved, but it fails again and asks for re-authentication, leaving me in a difficult situation.
BETANIA DONNINI 0 Reputation points

2025-07-10T14:40:33.95+00:00

Que pasa con Outlook?? por que no se puede iniciar sesion, cuanto demoran en resorverlo??

BETANIA DONNINI 0

UTC Date: 2025-07-10T14:34:03.069Z
Client Id: 168C0DAE8E60405389A961BCD85C5EF0
Session Id: c7acf9cf-73fb-44d8-b1fb-73487c068d9b
Client Version: 20250620014.20
BootResult: fail
Back Filled Errors: Unhandled Rejection: Error: 401:undefined|undefined:undefined
err: Error: 401
esrc: StartupData
et: ServerError
estack: Error: 401
    at Object.w [as createStatusErrorMessage] (https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mailindex.ad3a7e4e.js:1:1039)
    at https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mailindex.ad3a7e4e.js:1:161561
st: 401
efe: CP6P284CA0092, SCWP298CA0004

Susana Ribelles Palau 0

¿Qué puedo hacer? Tengo todo aquí.

UTC Date: 2025-07-10T14:43:33.940Z
Client Id: 6919F00AA0844BB4982E3A343E513713
Session Id: 1d092634-454d-4197-8255-c9bf01f15477
Client Version: 20250620014.20
BootResult: fail
Back Filled Errors: Unhandled Rejection: Error: 401:undefined|undefined:undefined
err: Error: 401
esrc: StartupData
et: ServerError
estack: Error: 401
    at Object.w [as createStatusErrorMessage] (https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mailindex.ad3a7e4e.js:1:1039)
    at https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mailindex.ad3a7e4e.js:1:161561
st: 401
efe: PA7P264CA0392

Brad Gosdin 0

Just a user with the same issue:

UTC Date: 2025-07-10T14:42:43.996Z
Client Id: 9D2CE51ACB064F75988CCF34A68AB2C2
Session Id: 2f80b02c-fe82-4d33-b00d-55f8188a143b
Client Version: 20250704003.04
BootResult: fail
Back Filled Errors: Unhandled Rejection: Error: 401:undefined|undefined:undefined
err: Error: 401
esrc: StartupData
et: ServerError
estack: Error: 401
    at Object.w [as createStatusErrorMessage] (https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mailindex.5ec1239e.js:1:1039)
    at https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mailindex.5ec1239e.js:1:163185
st: 401
efe: SN1PR12CA0108

D Stewart 5 Reputation points

2025-07-10T15:06:44.5966667+00:00

Same here Florida. I started my new job today I had to log into my email because I forgot my password and I couldn't log in so they said I had to go home for the day
OG hotmail user 0 Reputation points

2025-07-10T15:09:34+00:00

I'm getting this same error after I enter my Outlook login credentials. Multiple browsers and devices. Pleases help, Microsoft.
Rob Sinclair 0 Reputation points

2025-07-10T15:11:05.25+00:00

I really wish I'd known that Outlook and several other services are down before I started uninstalling and reinstalling the outlook app!!! Why couldn't the 401 notification highlight the issue!!!!

Microsoft Outlook Status

FYI if you wanted to check the status of the outage, you can find it here: https://status.cloud.microsoft/m365/referrer=serviceStatusRedirect

PauloRaphael-5237 0

Seeing that I'm not alone gives me a giant relief.

Having the same errors, receiving errors 500 and 401. Thought I was the only one having a broken inbox.

Status code 500:

500:
clientIPAddress 163.116.228.60
X-ClientId: 508D086268014A0D9757D9286D4E1F18
request-id 5a6626d7-97e0-46d3-c4ac-9cd9b11dc5d5
X-Auth-Error System.Runtime.InteropServices.COMException
X-OWA-Version 15.20.8901.24
X-FEServer SCZP215CA0014
X-BEServer SCZPR80MB7321
Date:10/07/2025 14:57:43

401:

UTC Date: 2025-07-10T15:00:39.024Z
Client Id: 508D086268014A0D9757D9286D4E1F18
Session Id: 1bce0ef3-9bce-4032-b479-5c2d33e5c686
Client Version: 20250704003.04
BootResult: fail
Back Filled Errors: Unhandled Rejection: Error: 401:undefined|undefined:undefined
err: Error: 401
esrc: StartupData
et: ServerError
estack: Error: 401
    at Object.w [as createStatusErrorMessage] (https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mailindex.5ec1239e.js:1:1039)
    at https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mailindex.5ec1239e.js:1:163185
st: 401
efe: ROAP284CA0251

NealC 0 Reputation points

2025-07-10T15:24:01.8633333+00:00

I am having the same issue, just my outlook account, luckily my other family members can still use their accounts (especially given how important these accounts are and the fact that they are traveling atm)

Microsoft please fix this problem ASAP.
MartinW-5232 0 Reputation points

2025-07-10T15:32:44.5866667+00:00

I have the 401 error code that came up since last evening.

Syntax error: the string did notmatch the expected pattern.:undefined.

Otto IV 0

Tengo el mismo problema:

UTC Date: 2025-07-10T15:40:15.817Z
Client Id: D1D66FEAF3D0462E83AEE2AD903C584A
Session Id: 97f56eeb-9aad-4912-9668-16f515681816
Client Version: 20250620014.20
BootResult: fail
Back Filled Errors: Unhandled Rejection: Error: 401:undefined|undefined:undefined
err: Error: 401
esrc: StartupData
et: ServerError
estack: Error: 401
    at Object.w [as createStatusErrorMessage] (https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mailindex.ad3a7e4e.js:1:1039)
    at https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mailindex.ad3a7e4e.js:1:161561
st: 401
efe: BLAPR03CA0125

Barbara Thomas 0 Reputation points

2025-07-10T15:43:51.6966667+00:00

My Hotmail account stopped working today. Can't receive emails. Help!
ml posey 0 Reputation points

2025-07-10T15:48:40.8466667+00:00

Really need to access my email!!
D Stewart 5 Reputation points

2025-07-10T15:48:57.35+00:00

Same Here Florida
D Stewart 5 Reputation points

2025-07-10T15:56:53.25+00:00

Hey EveryonE. GO TO: Microsoft's Service Status page. That page states what services are temporarily Out.... And OUTLOOK is IN RED on the page.
Lorena Dubiniecka 0 Reputation points

2025-07-10T16:01:11.6066667+00:00

Same happened to me as of 4 hours ago

. Cannot sign into microsoft too. error 401
Tracy Nel 0 Reputation points

2025-07-10T16:02:06.86+00:00

I'm from South Africa, same problem since just before midday today . Done everything suggested on help sites, all to no avail. Desperately need to access my emails
Vivian Pearson 0 Reputation points

2025-07-10T16:06:21.58+00:00

I am having the same problem for the last 5 hours.
Ruth Chaplin 0 Reputation points

2025-07-10T16:09:24.5866667+00:00

It’s a bit of a nightmare because my husband is receiving his e mails, I can’t receive or send.

Same 401 error message. Can’t change anything because my contact phone number is a landline and no messages can be sent via text and I can’t change to a mobile without a verification code.

Sort yourselves out. You’re saying it’s fixed but it doesn’t appear to be.
Joe Profeta 0 Reputation points

2025-07-10T16:09:48.84+00:00

July 10, 2025 Outlook Error 401 No access to Outlook on PC or on Android mobile phone

Cleared cache and cookies no change no access...Ugh. Dealing with other product defect issues via email, and now I'm out of communication with the vendor...UGH. Help from Microsoft would be appreciated. Guess I'll switch my "go to" to Chrome and Gmail. They work.
Tracy 0 Reputation points

2025-07-10T16:14:02.4+00:00

Mine is working now
Kerry Simpson 0 Reputation points

2025-07-10T16:14:28.9433333+00:00

Mine Hotmail is still the same is some people having be same issue as now as it’s 17:14 x
Simon W 0 Reputation points

2025-07-10T16:16:42.5933333+00:00

Yea I've got the same problem, I am unable to access my mailbox on my laptop.

I reached out to Microsoft for support and they said it might be that its tied to a company who have restricted access, which makes no sense as its my personal email.

Very confused as to why this is happening but i guess it's reassuring that a lot of people have the exact same issue on the same day, hopefully Microsoft is working on this issue.
Ruth Chaplin 0 Reputation points

2025-07-10T16:18:40.64+00:00

It’s literally just started working again!
骏余 0 Reputation points

2025-07-10T16:27:36.47+00:00

Just saw the issue has been resolved, at least for me I can access the mail now. Hope all of you get your access soon.
Alireza Farmani 0 Reputation points

2025-07-10T16:48:16.73+00:00

Mine is working since 45 minutes ago.
TeresaM 370 Reputation points

2025-07-10T17:40:18.4066667+00:00

As an update. I am now able to access my email.

Answer accepted by question author

MER 270

I have spoken with Microsoft this AM via live chat and its a known issue which is effecting some users. They are working on the issue and hope to have it resolved asap

Saeed Ahmad 5 Reputation points

2025-07-10T13:15:06.96+00:00

Hi, could you let me know how did you chat to microsoft. can you please send me that link for chatting with microsoft team?
Lisa Donor 0 Reputation points

2025-07-10T13:25:12.3266667+00:00

I am having the same problem. I can’t sign into my email on my iPhone . It started after 3 am
ULRICH WILLEMS 0 Reputation points

2025-07-10T14:03:38.3666667+00:00

I have the same issue here, very fustrating!!
SYED RASHID 50 Reputation points

2025-07-10T14:19:18.58+00:00

MER, Your update is very reassuring! Hoping they fix it ASAP. I badly need access to my email. Thanks very much.
Laurk 10 Reputation points

2025-07-10T15:07:10.6233333+00:00

I am having the same issue today July 10, 2025. I can access my account but have no access to email. There is no rejection error, I appear to be signed in, but cannot send or receive emails.
Rob Sinclair 0 Reputation points

2025-07-10T15:12:33.5966667+00:00

Microsoft Outlook Status Checker:

https://status.cloud.microsoft/m365/referrer=serviceStatusRedirect
Tonia Thompson 0 Reputation points

2025-07-10T15:21:44.49+00:00

I am having the same issue. I cannot access my hotmail email account.
mieke de leeuw 0 Reputation points

2025-07-10T15:23:59.36+00:00

ik heb het zelfde probleem, kan niet inloggen maar om hier een antwoord te kunnen geven moest ik mij aanmelden met mijn hotmail, en dat lukte dan weer wel. Hoop dat snel opgelost kan worden want deze is heel belangrijk voor mij. De rest van de familie heeft er geen last van.
NealC 0 Reputation points

2025-07-10T15:24:33.9166667+00:00

You mean a LOT of users not SOME...

DN 0

Same issue here. The good news is that I can still load outlook in the mobile app and access my email. However, on a pc running Chrome and other browsers I cannot. Error

UTC Date: 2025-07-10T15:12:14.592Z
Client Id: 498AB25065264141B37F2BBBD975968F
Session Id: 8dccbadc-c339-464f-8cae-cfc8dcf700fc
Client Version: 20250704003.04
BootResult: fail
Back Filled Errors: Unhandled Rejection: Error: 401:undefined|undefined:undefined
err: Error: 401
esrc: StartupData
et: ServerError
estack: Error: 401
    at Object.w [as createStatusErrorMessage] (https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mailindex.5ec1239e.js:1:1039)
    at https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mailindex.5ec1239e.js:1:163185
st: 401
efe: PH3PEPF0000409D

Mohamed Shaw 0 Reputation points

2025-07-10T15:34:55.2533333+00:00

But my wife can Access her Hotmail Account
Ruth Chaplin 0 Reputation points

2025-07-10T16:10:18.22+00:00

How did you get live chat please?
JCS-3583 0 Reputation points

2025-07-10T16:13:16.95+00:00

Mer How did you get to live chat?
Mark Moore 0 Reputation points

2025-07-10T16:37:09.9733333+00:00

My email just popped up and started working on my phone. I refreshed my browser and it came back, too.
JLmo 15 Reputation points

2025-07-11T03:09:25.13+00:00

I am interested to know what caused this!
Francisco Peralta 0 Reputation points

2025-07-15T21:45:29.79+00:00

I cannot sign in to my hotmail.com account since about 4 days ago! It keeps sending me in circles and then locks me out. I went through a whole 3 page question answer session to include everyone I emailed recently and the exact subject line, past passwords, security questions etc. then got an email to my gmail account saying "we don't respond to these because you have two step verification! Which is where the problem is! This is getting ridiculous! When will this be fixed? I need access now!
Francisco Peralta 0 Reputation points

2025-07-15T21:48:58.0133333+00:00

It appears to be a lot of users! This was 5 days ago!!
viresh shah 0 Reputation points

2025-07-22T00:28:20.6566667+00:00

Is it resolved? I just started getting this issue since yesterday
JGalilei 0 Reputation points

2025-07-22T16:57:06.74+00:00

I'm unable to access my email and started getting the 401 error message today.
JGalilei 0 Reputation points

2025-07-23T13:06:56.3666667+00:00

I was able to access my email this morning, July 23rd. Then around 9am it disappeared and this same error showed up.

60 additional answers

v-prompt v-prompt 0 Reputation points

2025-07-10T06:11:58.1733333+00:00

UTC Date: 2025-07-10T06:05:01.520Z Client Id: 0EE855AE4BA445089D47C6B047E67176 Session Id: 611326cc-b953-4eaf-9320-7e936b273b06 Client Version: 20250704003.04 BootResult: fail Back Filled Errors: Unhandled Rejection: SyntaxError: JSON.parse: unexpected character at line 1 column 1 of the JSON data:undefined|Unhandled Rejection: SyntaxError: JSON.parse: unexpected character at line 1 column 1 of the JSON data:undefined|Unhandled Rejection: Error: 401:undefined|Unhandled Rejection: SyntaxError: JSON.parse: unexpected character at line 1 column 1 of the JSON data:undefined|undefined:undefined|undefined:undefined|undefined:undefined|undefined:undefined err: Error: 401 esrc: StartupData et: ServerError estack: w@https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mailindex.5ec1239e.js:1:1039 S/</<@https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mailindex.5ec1239e.js:1:163185

st: 401 efe: KU2P306CA0083
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Astrid Ghysels 0 Reputation points

2025-07-10T09:13:33+00:00

I have the same problem. I get this message:

UTC Date: 2025-07-10T09:07:04.246Z Client Id: CDA34AE8D62E4F70A3728A781A6E9348 Session Id: 9913dea5-cf96-4a5e-90de-c984a711093b Client Version: 20250620014.20 BootResult: fail Back Filled Errors: Unhandled Rejection: Error: 401:undefined|undefined:undefined err: Error: 401 esrc: StartupData et: ServerError estack: Error: 401 at Object.w [as createStatusErrorMessage] (https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mailindex.ad3a7e4e.js:1:1039) at https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mailindex.ad3a7e4e.js:1:161561 st: 401 efe: PR0P264CA0262

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miguel abelleira abelleira gonzalez 0 Reputation points

2025-07-10T09:34:28.7433333+00:00
I have the same problem, phone, pc, all of my devices.
```
UTC Date: 2025-07-10T09:26:55.565Z
Client Id: 9033F1ABBC87464D8E724F6A6B9F9FA0
Session Id: 74ac7142-942b-4a5d-bea3-58f8674fc497
Client Version: 20250704003.04
BootResult: fail
Back Filled Errors: Unhandled Rejection: Error: 401:undefined|undefined:undefined
err: Error: 401
esrc: StartupData
et: ServerError
estack: Error: 401
    at Object.w [as createStatusErrorMessage] (https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mailindex.5ec1239e.js:1:1039)
    at https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mailindex.5ec1239e.js:1:163185
st: 401
efe: MA4P292CA0010
```
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Annamaria Dal Vecchio 0 Reputation points

2025-07-10T12:19:13.6466667+00:00

I have the same problem

allaoua 0 Reputation points

2025-07-10T13:09:50.93+00:00

I have the same problem

Christopher 0 Reputation points

2025-07-10T14:40:31.64+00:00

Same here, unable to log in under any device

Yolande Washington 0 Reputation points

2025-07-10T15:14:25.6266667+00:00

I have the same problem when I try to access my outlook email. It still hasn't been fixed yet

KINGA FERENCZ 0 Reputation points

2025-07-10T15:34:46.9+00:00

I have the same problem
TINA finch 0 Reputation points

2025-07-10T09:43:10.6533333+00:00

This is happening to me too, on my mobile and laptop had no emails since 1am this morning. have changed my passwords and everything, getting panicky as was hacked last year
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Mohamed Shaw 0 Reputation points

2025-07-10T15:34:02.97+00:00

I am unable to sign in to my personal Account
Senthil Rajan 15 Reputation points

2025-07-10T10:45:44.48+00:00

Hi there, Am also having the same issue since this morning. Is this affecting many users?

UTC Date: 2025-07-10T10:38:53.426Z

Client Id: C7AC4F23FE714ED2AE6132834069447C

Session Id: 7658497d-a4fc-462a-9e00-03d4b0330732

Client Version: 20250620014.20

BootResult: fail

Back Filled Errors: Unhandled Rejection: SyntaxError: Failed to execute 'json' on 'Response': Unexpected end of JSON input:undefined|Unhandled Rejection: Error: 401:undefined|undefined:undefined|undefined:undefined

err: Error: 401

esrc: StartupData

et: ServerError

estack: Error: 401

at Object.w [as createStatusErrorMessage] (https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mailindex.ad3a7e4e.js:1:1039)

at https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mailindex.ad3a7e4e.js:1:161561

st: 401

efe: SY5PR01CA0073
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3 people found this answer helpful.
Luis 0 Reputation points

2025-07-10T12:12:07.44+00:00

Same problem here, is there any way to reach out to Microsoft?

Chris Wilson 0 Reputation points

2025-07-10T12:59:48.6733333+00:00

same issue both online and on the outlook desktop software.

UTC Date: 2025-07-10T12:51:27.949Z Client Id: E3EE7C42B46B451694B187B61DA09B94 Session Id: c45d3e19-f3b4-41e8-a94c-65d82a5fb67c Client Version: 20250620014.20 BootResult: fail Back Filled Errors: Unhandled Rejection: Error: 401:undefined|undefined:undefined err: Error: 401 esrc: StartupData et: ServerError estack: Error: 401 at Object.w [as createStatusErrorMessage] (https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mailindex.ad3a7e4e.js:1:1039) at https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mailindex.ad3a7e4e.js:1:161561 st: 401 efe: LO3P265CA0008

Unable to access my Outlook/hotmail email account. Error 401- RESOLVED

Microsoft Outlook Status

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