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Andrew Emmett's avatar
Andrew Emmett
Brass Contributor
Aug 11, 2022
Solved

KB5016623 Issues with AAD App Proxy

Hello We have encountered some issues with KB5016623. The is causing the server, Win 2019 server running IIS, to crash after 5 to 10 minutes and to be unable to use AAD App Proxy connections that ar...
azure ad application proxy
  • hawkboy's avatar
    hawkboy
    Aug 12, 2022

    Andrew Emmett 

    Hi Andrew,

     

    We had the same issue today.   Uninstalling KB016623 resolved it as well.  I've logged it with Microsoft.  Will report back when they respond. 

     

    Glen. 

freddy104's avatar
freddy104
Copper Contributor
Nov 10, 2022

Word from Microsoft is that this issue is fixed in the November 8 Patch Tuesday patches. Can anyone confirm if they have tested the 11/8 patches to confirm the issue is resolved?

Rowley320's avatar
Rowley320
Copper Contributor
Nov 11, 2022
Installed Nov patch for Server 2016 (kb5019964) and appears to have resoled the issue.
  • az_app's avatar
    az_app
    Copper Contributor
    Nov 11, 2022

    Similar patch for Server 2019 is KB5019966:
    https://support.microsoft.com/en-gb/topic/november-8-2022-kb5019966-os-build-17763-3650-b09dad62-5cd7-47cd-992f-b7d01f2956c1

    • RamiroPalmer's avatar
      RamiroPalmer
      Copper Contributor
      Sep 21, 2023

      Thanks for sharing your experience with KB5016623 and AAD App Proxy. I just wanted to jump in here, even though it's an old thread, and let you know that you're not alone. Others have reported similar problems. One suggestion I've seen is to try using individual proxies for specific tasks. This might help isolate any potential conflicts that could be causing the crashes and authentication problems. You can check out https://proxys.io/en for more information on setting up individual proxies.

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