Office 365 Outlook desktop app prompts for all account passwords on startup

DrMopp

Senior Member
Outlook version
Outlook 365 64 bit
Email Account
Office 365 Exchange
As per the title. Outlook Version is 2207 (Build 15427.20194 Click to Run). If I log in to all 5 accounts (3 Exchange, 2 IMAP) all is good even if I close and re-open the app, but following reboot it asks for passwords again. (I have checked the 'stay logged in' option on the Gmail accounts) I have seen a long thread on the Microsoft Community site with this exact problem back in 2020 to which one of the solutions was to check for tasks in task scheduler, but I have and there are none, ideas welcomed.
 

Diane Poremsky

Senior Member
Outlook version
Outlook 2016 32 bit
Email Account
Office 365 Exchange
There should be at least one office task, checking for updates... but it should be causing problems.

Do you have windows updates waiting to install? That can affect saving changes.
Do you use ccleaner or similar? Don't - they often remove files or registry settings you need.
Are you logging in as a windows administrator account or user account?
 

DrMopp

Senior Member
Outlook version
Outlook 365 64 bit
Email Account
Office 365 Exchange
Sorry what I meant was in that MS community thread the command
Get-ScheduledTask | foreach { If (([xml](Export-ScheduledTask -TaskName $_.TaskName -TaskPath $_.TaskPath)).GetElementsByTagName("LogonType").'#text' -eq "S4U") { $_.TaskName } }
was suggested to identify the tasks that needed to be disabled to work round the issue, however when I issued that command there was no output.
There are several scheduled tasks visible in Task Scheduler but I guess they must not be configured in that way.
The issue is intermittent, and today everything signed in without issue. Zero degree of confidence it won't return though.
I don't use CCleaner, and I am logging in as an Administrator
 

DrMopp

Senior Member
Outlook version
Outlook 365 64 bit
Email Account
Office 365 Exchange
The issue has returned, sometimes prompting for the Outlook.com account password, sometimes the Google IMAP accounts passwords
 

DrMopp

Senior Member
Outlook version
Outlook 365 64 bit
Email Account
Office 365 Exchange
Outlook now prompts for passwords for al accounts (mixture of Exchange and IMAP. Office desktop apps show 'sorry we can't get to your account right now, to fix this sign in again' good internet connection and OneDrive for Business is connected. MS techs just keep deleting credentials, and having me sign in, which fixes it until the next reboot. Achieving nothing.

I am also getting AAD error 1098 and warning 1097 in the Event Viewer (sometimes two per second) - AADTokenBrokerPlugin operation

Error: 0x8009002C The specified data could not be decrypted.
Exception of type 'class WinRTException' at AuthorizationClient.cpp, line: 131, method: ADALRT::AuthorizationClientDeserialize.

Log: 0xcaa10083 Exception in WinRT wrapper.
Logged at AuthorizationClient.cpp, line: 131, method: ADALRT::AuthorizationClientDeserialize.

Looks as though this could be related - ideas welcome.
 

DrMopp

Senior Member
Outlook version
Outlook 365 64 bit
Email Account
Office 365 Exchange
Still no-one up for a challenge?

Outlook still prompting for passwords for al accounts (mixture of Exchange and IMAP. Also get 'OneDrive is not signed in' message. MS M365 techs just keep having me delete credentials, but the problem returns on next reboot.

I am still getting the AAD error 1098 and warning 1097 in the Event Viewer (sometimes two per second) - AADTokenBrokerPlugin operation

Error: 0x8009002C The specified data could not be decrypted.
Exception of type 'class WinRTException' at AuthorizationClient.cpp, line: 131, method: ADALRT::AuthorizationClientDeserialize.

Log: 0xcaa10083 Exception in WinRT wrapper.
Logged at AuthorizationClient.cpp, line: 131, method: ADALRT::AuthorizationClientDeserialize.

M365 say it's a Windows problem, Windows support say it's normal (the AAD error that is, not the password prompts) At my wits end here and considering ditching M365 for Google Workspace
 

DrMopp

Senior Member
Outlook version
Outlook 365 64 bit
Email Account
Office 365 Exchange
Something I said? Appreciate everyone is a volunteer here but seems as though this forum is no longer active, happy to be proved wrong of course.
 
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