none
Users frequently disconnect from Remote Desktop Session Host RRS feed

  • Question

  • Hello,

    We are running six Remote Desktop Session Hosts (RDSH) all on Windows Server 2016, version 1607, OB Build 14393.3659.

    About a week or so ago, we noticed that our users are mass disconnecting from our RDSHs. On their end, it tries to automatically reconnect and is usually successful. But we don't know why they are mass disconnecting in the first place.


    There is no pattern to when they disconnect. It can be once a day or six times a day and is extremely frustrating to our users (and us). We thought that maybe our GPOs are in a sort of combination that causes the users to disconnect at refresh but the disconnects don't happen every 90 minutes. We checked the event viewer in each server in our RDS environment, and found absolutely no hints or clues. Users that use our VPN, instead of RDS, works fine and no disconnections there. The servers aren't restarting themselves either. It just does a mass drop whenever it feels like and we have no idea what is causing it.

    Does anyone have any recommendations on where to look to see what could be causing this?

    Tuesday, May 26, 2020 9:56 PM

Answers

  • Sometimes when CPU reached the peak, session host would disconnect the connections to release the usage.

    Sorry but that is not always true. Windows Server 2016, by default, has Fair Share enabled. Fair Share will dynamically distribute CPU time to all users, should the CPU hit 100%.

    We have resolved this issue by downgrading our firewall. It seems that a newer firmware version of our firewall were causing these issues.

    • Marked as answer by SC Support Monday, June 8, 2020 2:33 PM
    Monday, June 8, 2020 2:32 PM

All replies

  • Hi,

    1. Is there any clues on the disconnection interval?

    Please check the collection settings --->Session and check if any configuration for session host server timeout.

     

    2. For event logs, kindly check both on server and client side:

    https://docs.microsoft.com/en-us/windows/security/threat-protection/auditing/audit-other-logonlogoff-events

     


    Thanks,

    Jenny


    Please remember to mark the replies as answers if they help.
    If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com.

    Wednesday, May 27, 2020 2:49 AM
  • 1. Our active session limit is set to never. Even if this was set, it would be very unlikely this would be the issue because everyone gets disconnected at the same time. 

    2. We have checked our logs and have not found any significant clues. Unfortunately due the nature of COVID-19, our users are all working from home predominantly using their own personal PCs. We are not able to extract logs from their PCs.

    Side note, the disconnections are still happening. Twice today so far and it's already 9:30AM.

    Wednesday, May 27, 2020 3:40 PM
  • Hi,

    Without event logs or other traces, it is hard to find the cause of random disconnection issue.

     

    Sometimes when CPU reached the peak, session host would disconnect the connections to release the usage.

     

    Please monitor the network and CPU usage when disconnection issue occurred.

     

    Thanks,

    Jenny


    Please remember to mark the replies as answers if they help.
    If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com.

    Friday, May 29, 2020 1:12 AM
  • Sometimes when CPU reached the peak, session host would disconnect the connections to release the usage.

    Sorry but that is not always true. Windows Server 2016, by default, has Fair Share enabled. Fair Share will dynamically distribute CPU time to all users, should the CPU hit 100%.

    We have resolved this issue by downgrading our firewall. It seems that a newer firmware version of our firewall were causing these issues.

    • Marked as answer by SC Support Monday, June 8, 2020 2:33 PM
    Monday, June 8, 2020 2:32 PM