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Performance Issue: Microsoft products prompting to use MS Authenticator instead of Duo

Last Updated:
2026-04-28 16:15:50
Event:
2026-04-28 08:54:00
Status:
Closed
Brief Description:
A recent update to the Duo authentication process has resulted in Microsoft apps requesting the use of MS Authenticator instead of Duo. CIT security has investigated and resolved the issue. Please do not install the MS Authenticator.
User Impact:
End-users were prompted to authenticate into Microsoft applications and web apps and to use the Microsoft Authenticator instead of Duo.

If end-users continue to have problems, they should close the authentication prompt and log in again.
Workaround:
There is no workaround for this issue
Current Status:
CIT security has resolved the issue and recommends the following:

  • Users who installed Microsoft Authenticator or another method should now get a Duo prompt. They don't need to uninstall Authenticator or take any actions.
  • Users who prefer to switch back to Duo can open a ticket.
Services Affected:
Collaboration Platforms
Email and Calendar
Subsites Affected:
Microsoft Teams
Outlook for Mac
Outlook for Windows
Outlook on the Web
Full Description:
A recent update to the Duo authentication process has resulted in Microsoft apps requesting the use of MS Authenticator instead of Duo. CIT security has investigated and resolved the issue. Please do not install the MS Authenticator.

If end-users continue to have problems, they should close the authentication prompt and log in again.
CIT TDX ID:
2228687


Timeline of Changes

Description Current Status Date Time
A recent update to the Duo authentication process has resulted in Microsoft apps requesting the use of MS Authenticator instead of Duo. CIT security has investigated and resolved the issue. Please do not install the MS Authenticator.

If end-users continue to have problems, they should close the authentication prompt and log in again.
CIT security has resolved the issue and recommends the following:

  • Users who installed Microsoft Authenticator or another method should now get a Duo prompt. They don't need to uninstall Authenticator or take any actions.
  • Users who prefer to switch back to Duo can open a ticket.
 2026-04-28 16:15:50
A recent update to the Duo authentication process has resulted in Microsoft apps requesting the use of MS Authenticator instead of Duo. CIT security has investigated and resolved the issue. Please do not install the MS Authenticator.

If end-users continue to have problems, they should close the authentication prompt and log in again.
CIT security has resolved the issue and recommends the following:

  • Users who installed Microsoft Authenticator or another method can continue to use it if desired.
  • Users who prefer to switch back to Duo can open a ticket.
 2026-04-28 16:11:47
A recent update to the Duo authentication process has resulted in Microsoft apps requesting the use of MS Authenticator instead of Duo. CIT security has investigated and resolved the issue. Please do not install the MS Authenticator.

If end-users continue to have problems, they should close the authentication prompt and log in again.
Status: CIT security has investigated and resolved the issue. 
 2026-04-28 09:55:33