The Windows Setup performance events are saved into a log file that is named Setup.etl, which is available in the %WINDIR%\Panther directory of all installations.
Kindly go through the following Microsoft reference article:
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Hi,
I'm try to update machine from 1909 to 21H2 but its keep failing after the reboot.
I checked C:$WINDOWS.~BT\Sources\Panther\CompatData_xxx
file show no blockers
I tried following
Which log file can I check to see why its failing to install
The Windows Setup performance events are saved into a log file that is named Setup.etl, which is available in the %WINDIR%\Panther directory of all installations.
Kindly go through the following Microsoft reference article:
Hi, @lalajee
Thank you for posting in Microsoft Q&A forum.
In order to check which log files to view to understand why the 21H2 feature update is failing to install, you can follow the troubleshooting checklist provided by Microsoft here. Specifically, the checklist recommends checking the following log files for errors or issues:
setuperr.log
: This file is located in the %windir%\Panther
directory and contains information about errors that occurred during the installation process.setupact.log
: This file is also located in the %windir%\Panther
directory and contains information about the installation process, including successful operations and warnings.Event Viewer
: This tool can be accessed by typing "Event Viewer" in the Windows search bar. From there, you can navigate to the "Windows Logs" section and view the "Setup" and "System" logs for any errors or issues related to the installation process.WindowsUpdate.log
: This file can be found in the %windir%\WindowsUpdate.log
directory and contains information about Windows Update operations.If the answer is the right solution, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Add comment".