[Bug?] NTLite 2025.10.10649 crashes on "Latest online updates" (W10 LTSC 21H2)

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intelfx

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The latest NTLite build (2025.10.10649) silently crashes when opening the "Latest online updates" window on an unmodified Windows 10 LTSC 21H2 image (`en-us_windows_10_enterprise_ltsc_2021_x64_dvd_d289cf96`) when the update cache is populated. After purging the update cache, the crash does not reoccur.

I could not find any core dumps or any information about the crash except a record in the Windows Event Log; the event record and NTLite.log are attached.

This is probably not high priority because purging the update cache is enough to prevent the crash, but I thought I'd report it nonetheless.
 

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Hi,

thank you for the report. I downloaded all the files from your log, and opened Latest online updates, they got parsed, but no crash.
Maybe one of the files was corrupted/incomplete.

Please next time if this happens, preserve the entire cache directory for me (e.g. Z:\dist\windows\os\Updates\10.21H2.x64), I would like to test it.
 
nuhi said:
Hi,

thank you for the report. I downloaded all the files from your log, and opened Latest online updates, they got parsed, but no crash.
Maybe one of the files was corrupted/incomplete.

Please next time if this happens, preserve the entire cache directory for me (e.g. Z:\dist\windows\os\Updates\10.21H2.x64), I would like to test it.
Click to expand...

I do have the original directory that had caused the crash. It is very large (13 GB); where do you want it?

I suspected a corrupted/damaged file, but I've been using the same (persistent) updates cache directory for a long time. It is stored on an integrity-protected storage (network drive to a Linux machine with a redundant/checksummed filesystem), it was not modified recently and there were no problems with it on any previous build of NTLite.

Furthermore, I have extracted all file names mentioned in the log and copied them into a fresh Updates/10.21H2.x64 directory, and the crash did not reoccur. So whatever the problem is, it is not directly related to one of the files in the log.


Or, better yet, could you please tell me how to reacquire an update file by name? I'll do it myself, then compare checksums and see if any files are in fact corrupted.
 
Last edited:
Just in case you'd prefer to look at it yourself:

EDIT: link updated due to internal storage organization problems, apologies for all the rapid edits.
 

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Last edited:
Thank you.
Downloaded your files, placed them and tried to trigger the crash, but no luck.

Could it be that your machine is unstable? e.g. memory XMP or CPU overclock?
Or some antivirus in the background which I would need to replicate this.
 
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