Windows Server RDS sessions hanging after recent updates
Recent cumulative updates are causing Remote Desktop Session Host collections to lock up completely, trapping user connections at the connecting screen and disabling administrative tools like Task Manager or shutdown commands. Uninstalling the problematic update or rolling back the patch restores normal session host functionality and allows new connections.
What people tried
Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.
Found another way around this?
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- 1Rebooting the server2 people mentionedDid this help you?
- 2Performing a hard reset on the serverDid this help you?
- 3Rolling back the cumulative update package using DISMDid this help you?
- 4Checking FSLogix profile container logsDid this help you?
- 5Uninstalling the problematic updateDid this help you?
- 6Rolling back to a previous build versionDid this help you?
- 7Pausing Windows updatesDid this help you?
- 8Performing a hard shutdown of the serverDid this help you?
- 9Changing server passwordsDid this help you?
- 10Using alternate remote tools or remote shells like PSExec with query user and logoff commandsDid this help you?
- 11Disabling the user access logging serviceDid this help you?
- 12Manually restarting the affected host in the Azure portalDid this help you?
- 13Waiting for the server to self-recover after an hourDid this help you?
In their words
Unedited, grouped by where they were said, most upvoted first within each place, each linked to the thread it came from.
“Spent most of the morning chasing a weird RDS issue. KB5122882 installed around 3:20am and a few hours later nobody could RDP into the server.”source ↗
“Since installing this month's CUs, KB5122871 on Windows Server 2025 (build 26100.33438) and KB5122882 on Windows Server 2022 (build 20348.5622), every session host in our RDS collection has started hanging in the same way, on the same day, and it had never happened before.”source ↗
“Some time ago a problem started to appear where users, when trying to connect, get a black screen with no ability to do anything, including me, the admin, being unable to connect to the server.”source ↗
“Previously this problem did not bother me much, since it occurred fairly rarely, but now it happens 10+ times a day.”source ↗
“Started randomly freezing completely about 2-3 weeks ago, multiple incidents now, barely any users on when it happens so it's not load issue.”source ↗
“When it hits: Users unable to login/disconnected, RDP dead, Bastion dead, Serial console dead, can't get in any way.”source ↗
“Lately they've been having difficulty logging in with the RDP.”source ↗
“As soon as I login I get a message "You're unable to sign in because you're already signed into another session that is blocked. Session blocked by: Local Session Manager Minutes blocked: xx Do you want to sign out of that session so that you can continue.”source ↗
“If I hit yes or no Boom, disconnected Splashtop dies no connection. RDP still doesn't work.”source ↗
“The only way that I seem to get back in is with a hard shutdown as there is no monitor connected.”source ↗
“I removed KB5123099 and rebooted and it fixed the issue on my 2016 RDS servers.”source ↗
“Same issue on Windows Server 2022 RDS. Task manager not working, query user not working, even shutdown the server not working. New connections aren't possible and stuck at Connecting state. Rollback fix the issue.”source ↗
“yep i had around 8 rds with that .. the terminal service hang after mutliple user deconnection.”source ↗
“I was wondering if it would happen on 2019, a have a few of those as well, better start blocking the update on my other machines.”source ↗
“I get a black screen when I try to log into the cloud PC and get the following error: Your Remote Desktop Services session has ended, possibly for one of the following reasons: The administrator has ended the session. An error occurred while the connection was being established. A network problem occurred.”source ↗
Where this came up
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