Outlook 365 app error 1001 on RDS environment ( FSLogix)

Anonymous
2023-07-07T08:25:49+00:00

Hello,

We encounter an issue with M365 apps (Outlook, Work, Excel) on a specific environment ( Remote Desktop Service)

Sometime, when an user open his application (Outlook for instance) on a RDS, an authentification pop and ask for credentials. If the user enter his credentials, he encounter a 1001 error.

« We encountered an issue [1001] »

https://learn-attachment.microsoft.com/api/attachments/5a947921-955a-4688-ad93-acc305bf77c6?platform=QnA

We already try some step to resolve the issue that help in some case but not all the case, and not defintely for a same user ( Issue occur again) :

  • Clear folder C:\Users*yourusername*\AppData\Local\Microsoft\OneAuth and  C:\Users*yourusername*\AppData\Local\Microsoft\IdentityCache
  • Move the user from 1 TSE server to an other TSE)e
  • Clear FSlogix User profil ( The specific one link to FSLogix Office 365 Container technology )

The main issue is that the error can occur again few day laterfor the same user.

We also generate some log from M365 apps client during the signin process with this link to help : https://learn.microsoft.com/en-us/office/troubleshoot/diagnostic-logs/how-to-enable-office-365-proplus-uls-logging

In the log I find the reference to the 1001 error but the log is a bit complex to understand or analyse.

0xa3e4	Microsoft Outlook	Identity Authentication Client	48cmb	Monitorable	OneAuth log {"Message": "[MSAL:0004]\tERROR  \tErrorInternalImpl:134\tCreated an error: 58tm1, StatusInternal::Unexpected, InternalEvent::None, Error Code 2147942403, Context '(pii)'", "IsError": true}	

07/07/2023 09:04:21.440	OUTLOOK (0x8b30)	0xa3e4	Microsoft Outlook	Identity Authentication Client	48cmb	Monitorable	OneAuth log {"Message": "[OneAuth:Error:58tm1:db6d7d6e-a557-4465-a968-a874c5e456e5] (Code:1001) An unexpected error occurred.", "IsError": true}	

07/07/2023 09:04:21.440	OUTLOOK (0x8b30)	0xa3e4	Microsoft Outlook	Identity Authentication Client	48cmb	Monitorable	OneAuth log {"Message": "[OneAuth:Error:9vdpp:db6d7d6e-a557-4465-a968-a874c5e456e5] Unexpected error code: 1001", "IsError": true}

Environment :

  • Microsoft FSLogix version : 2.9.7654.46150
  • Office version : version 2305 build 16501.20228
  • OS version : Windows Server 2019 Standard 1809 build 17763.4499
Outlook | Windows | Classic Outlook for Windows | For home

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  1. Anonymous
    2023-09-14T11:05:58+00:00

    @David RUBIO (drubio)

    Presumably your customers are using Windows Server 2019 Remote Desktop Services, multiple session hosts, user profile disks/FSLogix and Microsoft 365 apps?

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  2. Anonymous
    2023-09-14T08:52:39+00:00

    It's beginning to many customers on our side...

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  3. Anonymous
    2023-09-14T08:15:45+00:00

    @CHMJR

    Yes, we have multiple RDP session hosts,

    Random here too and having the exact same problem as you. Some users suffer more from this than others.

    We have already applied every possible solution we can find, but without success. Deleting the entire user profile does not always provide a solution.

    Is the problem known to Microsoft?

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  4. Anonymous
    2023-09-14T07:25:14+00:00

    We are also facing the 1001 error with Outlook 365.
    It appears that this error occurs when additional mailboxes are added.

    We have configured the registry keys to utilize ADAL (Active Directory Authentication Library) instead of WAM (Windows Account Manager) because WAM tends to have compatibility issues in a Server 2019 environment. However, it seems that after some time, WAM takes precedence over ADAL, leading to authentication failures.

    OS version : Windows server 2019 1809
    Office version : 2308 build 16.0.16731.20052 (32 bits)
    Microsoft FSLogix version : 2.9.8440.42104

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  5. Anonymous
    2023-09-08T13:29:47+00:00

    Yes RDS with

    • Microsoft FSLogix version : 2.9.7654.46150
    • Office version : version 2305 build 16501.20228
    • OS version : Windows Server 2019 Standard 1809 build 17763.4499

    @ARGUAIROLLES Florian

    @Mustafa Nazir

    Multiple session hosts also?

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