Edge Mobile won't sign me in.

Question

Edge Mobile won't sign me in.

Anshrr 0

Hello. Edge on my Samsung Flip7 FE is bugged somehow, and won't let me sign in to synchronize bookmarks etc. When I try with a passkey, it gives me and error (Something went wrong. [9n155] *), if I try without a passkey, it claims I've tried, and used the wrong password, too many times, makes me enter password and a text Captcha that does not work.

Trying to log into Microsofts website in Edge, doesn't work either, get the wrong password thing.

This wasn't a problem last week, but when I was trying to enter some credit card details stored in my account, it wanted me to verify my account. That's when it started.

What I've tried;

Using same passkey to log into Outlook, works.
Using passkey to log into website via Chrome and Samsung's webbrowser, works.
Logging in normally on PC, works.
Log into Edge on my partners Samsung phone, via "passkey on different device" (which is same device that can't log into it's Edge), works.
Verify account in Edge on Samsung tablet, worked.
Change password, still get the same errors.
Reset/empty app files/cache, did nothing.
Uninstall/reinstall Edge on phone, did nothing.
Remove Passkey, re-add passkey, nothing works.

So, tl;dr, the only place I can't log in to my MS account, is in Edge on my Samsung phone.

I can only assume there's something wrong with Edge files on the phone, but uninstalling didn't fix it, so I am at a loss. I don't particularly feel like resetting my entire phone to fix this, and am currently making do with Samsung's browser.

Has anyone experienced something like this, and/or have a solution?

Thanks!

The error message beneath the error is as follows:

Correlation Id: [Moderator note: PII removed]

Timestamp: 2025-12-26T14:25:32.000Z

DPTI: [Moderator note: PII removed]

Message: Access denied for the resource.

Tag: 9n155

Code: 0

0 comments

1 answer

Your answer

Answer 1

Anonymous

Hi Anshrr,

Thanks for reaching out to Microsoft Q&A Forum. I understand you're facing error tag 9n155. Please try to clear Edge profile data (not just cache). Go to Settings > Apps > Edge > Storage and clear

Site settings
Cookies and site data
Saved form data

Then try login again.

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Anshrr 0 Reputation points

2025-12-28T14:47:35.9533333+00:00

I've tried clearing data before, but to be sure, I tried again. Clear Data -> sends me to Edge storage. Here, I have 3 options. Free up space (unimportant data), Manage (cookies, locally stored data), and Clear all data (total data used by Edge etc). I tried all, including Clear all. Unfortunately it didn't help. Still get the same error.
Anonymous

2025-12-29T08:19:56.3633333+00:00

Hi,

Thanks for your response. Since I do not have a Samsung Flip 7 to test, please refer to these settings. If they match or are similar, you can use them to find the correct options.

Clear Credentials: Settings > Biometrics and security > Other security settings > Encryption and credentials > Clear credentials.

Next, clear Autofill or Samsung Pass: Settings > General management > Passwords, passkeys and autofill > Preferred service, then choose None to completely turn off autofill, or select Google if you want to switch the autofill service.
Anshrr 0 Reputation points

2025-12-30T01:11:33.1066667+00:00

I suddenly thought of something I hadn't tried yet, despite being obvious, and rebooted my phone. It seems to be working now. I feel stupid. Thank you.
Anonymous

2025-12-31T06:41:37.87+00:00

Hi,

Thanks for your response. I’m really glad to hear that your problem is resolved. If my solution was helpful, I would appreciate it if you could mark it as answered or give it a thumbs up.