2022 RDS Session Freezing randomly

Question

We are in the testing phase of upgrading to server 2022 for our RD Session hosts. We are experiencing random frozen sessions about 1-2x per day per user and the only way to unfreeze is to disconnect from the session and reopen it. The disconnect code that's shown in 'Microsoft-Windows-TerminalServices-LocalSessionManager/Operational' is 2147942464. The collections with 2019 session host servers are not experiencing this issue.

The connection broker is still 2019 so I'm wondering if this is a compatibility issue.

Answer 1

I had this very problematic issue since 3 or 4 months, explorer would crash after 24 hours of uptime, constant 12% cpu usage (corresponding to 1 core on a 8 core machine), slow OS.

I did a processmonitor because I was suspecting a virus. Did a search on this registry key. I stopped the TIP process, the service, didn't change anything. What instantly fixed the issue at the second I did it, was the comment on top :

"Deleting everything under HKLM\SYSTEM\Software\Microsoft\TIP\TestResults\ fixes this freezing issue (which took 10minutes to complete removal).

Immediately new entries were piling up.

Like others suggested above, remove Full Control permission for SYSTEM AND Users from the TestResult Node (so they only have read)."

Answer 2

This occurred with us on a MS 2022 Server and when we spun up a MS2019 Server we had the same issue with RDP sessions having latency. It was very random and weird behavior because it wasn't consistent at all. Some RDP sessions would have no issues and at the same time other sessions would freeze until you disconnect/reconnect, or the latency was so bad the RDP wasn't usable at all. All connections were through VPN (both site to site and web VPN). It's believed the UDP setting/traffic was interfering even though all packets & traffic looked good through the VPN and there wasn't anything blocking the UDP traffic. The issue was resolved by turning off UDP on Client through group policy.

On PC: Open the RUN dialog > gpedit.msc > Administrative Templates > Windows Comonents > Remote Desktop Services > Remote Desktop Connection Client > Turn Off UDP on Client
and enable it and add any notes you wish

On Server/Domain Controller go to GP Managment: Administrative Tools > Group Policy Management and create a group policy under the Domain

Answer 3

You guys ROCK!!! This has been very hard to identify.

Deleting everything under HKLM\SYSTEM\Software\Microsoft\TIP\TestResults\ fixes this freezing issue (which took 10minutes to complete removal).

Immediately new entries were piling up.

Like others suggested above, remove Full Control permission for SYSTEM AND Users from the TestResult Node (so they only have read).

We're going to take an additional step and uninstall Teams and Office Suite. We've put libreoffice for users that need to open word and excel docs.

Answer 4

This was causing us major problems on a brand new 2022 RDS Session Host. Users unable to drag tabs around in Edge and Chrome, and taskbar freezing up. Clearing out HKLM\SYSTEM\Software\Microsoft\TIP\TestResults\ resolves the issue instantly.

Answer 5

Thanks for the link. I deleted the keys and set permissions where it couldn't write. I'll post the results when I get some user feedback. Thx again.