Outlook inside AVD session host keep opening web browser to open OWA

Question

Hey everyone

so recently our users started to report that Outlook inside AVD keep popping up web browsers to open OWA , and this happened randomly while they are browsing their emails from Outlook.

I checked and verfied the Azure AD connect for SCP and device writeback, yet we are still getting erros 1098 & 1097 for AADTokenBrokerPlugin Operation.

is this related? or what it could be the reason that Outlook or whatever process keep popping up web browser to open OWA ??

Answer 1

Hello Zaher,

AADTokenBrokerPlugin Errors (1097 & 1098) These errors typically indicate token acquisition failures due to permission issues in the registry or corrupted token broker components. Specifically:

• Error 1098 (0xCAA5001C) occurs when the AAD token broker fails due to missing permissions on registry keys like: HKEY_CURRENT_USER\Software\Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppModel\SystemAppData\ Microsoft.AAD.BrokerPlugin_cw5n1h2txyewy\PSR

To resolve this issue, follow these steps:

1. Take ownership of the key if necessary (Owner = SYSTEM).
2. Fix the permissions on these registry keys by enabling inheritance (fixing one should fix both, unless multiple users log on to the same device):
   • HKEY_CURRENT_USER\Software\Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppModel\SystemAppData\ Microsoft.AAD.BrokerPlugin_cw5n1h2txyewy\PSR

Please refer to this link- https://learn.microsoft.com/en-us/troubleshoot/windows-client/user-profiles-and-logon/event-1098-error-0xcaa5001c

If you have any further queries, do let us know.