Windows 11 25H2: Files inside C:\Windows\Logs\WinREAgent and C:\Windows\Logs\mosetup were unexpectedly deleted

Question

My question:

https://learn.microsoft.com/en-au/answers/questions/5966970/the-folders-c-windowslogswinreagent-and-c-windowsl

Please omit the forward slashes when describing the problem.

This caused misunderstanding among netizens. sorry

The commands I used this morning were correct:

del /q /f /s %temp%\*
del /q /f /s C:\Windows\Temp\*

These are absolutely safe and were not deleted from the system.

Hello Microsoft Community,

I noticed a strange behavior on my Windows 11 25H2 laptop today.

At around 4:20 PM, I found that the contents inside these two folders were unexpectedly removed:

C:\Windows\Logs\WinREAgent
C:\Windows\Logs\mosetup

The folders themselves still exist, but the files and subfolders inside them are missing.

I did not manually delete these folders or files.

Before this happened, I only ran the following commands to clean temporary files:

del /q /f /s %temp%\*
del /q /f /s C:\Windows\Temp\*

I only intended to clean temporary files and did not access or modify Windows Logs folders.

My concern is whether this behavior is related to:

• Windows Update maintenance tasks
• Windows 11 update mechanisms
• The recently installed update KB5101684
• Automatic cleanup of Windows installation/recovery logs

Could deleting these log files affect:

• Future Windows Update installation?
• Windows Recovery Environment (WinRE)?
• Upgrade or rollback troubleshooting?
• System stability?

System information:

• Windows 11 25H2
• Update installed: KB5101684
• Device: Laptop

Could someone please confirm whether this is expected Windows behavior or if there is a possible issue after installing KB5101684?

Thank you.

Answer 1

Hello 林宗昇,

Welcome to Microsoft Q&A forum.

I understand your confusion when the logs on the folders are gone. However, you can rest assured that is not because of your commands, those commands cannot remove from these folders.

Also, the automatic cleanup for these files is also normal behavior. These files are purely logs and only provide temporary diagnostic data. Windows will periodically clean them up to save storage space. So it is normal when you see the logs are gone but the folder remains. As they are logs, they won't affect your future Windows Update or WinRE environment. I hope this clarifies.

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