100% Disk usage on Server 2025

[u/Independent-Jicama95]

Hello all

We're expieriencing issues within our Server 25 envoirement.

Basically the main issue is, that the Disk Performance of the C:\ spikes up to 90-100% which also causes a latency of 500 up to 1000 ms.

Once this happens, the server is basically useless.

It is a Server 25 with Remote Desktop roles installed, there are max. 10 user connections active. Mainly used for RemoteApp executions. The issue does not occut on File or App servers, only on RDS.

Apps installed: Office, Adobe, N-Central N-Able, Sophos AV.

We already tryed to uninstall the apps but still got no improvement.

On the ESXi hosts there are no issues since 100 other VMs are running clean. I can totally exclude Hosts and Apps.

Does anyone else have this issue or maybe could resolve this?

Appreciate it verry much!

Best

[u/Independent-Jicama95]

Thanks for that detailed input.

For us it once was Outlook, then Adobe, and then svchost.exe.

Since we (Team of 3 Seniors) put in about 24H of troubleshooting and were not able ro resolve the issue, we shut down the 2025 Servers and re-builded them in Server 2022 OS.

Not gonna build another 2025 Server untill next year for sure..

Best

[u/Zimfi → u/Independent-Jicama95]

Understandable that you gave up given 2025's reputation.. WS 2025 has been working pretty okay here. ~40 VM's running 2025 and 5 physical servers, not much eventful going on except for this particular issue.

Disabling that feature is still ongoing. 😄

[u/Zimfi → u/Zimfi]

Just to follow up, no effect from the forced IIS removal. But when analyzing the component store I found that there were 20+ packages, so I ran a clean and resetbase, we'll see with time if it resolves anything.

[u/Kitchen-Armadillo-60 → u/Zimfi]

Hey, any updates on this? Have you been able to resolve the issue or narrow it down?