Hello,
Thank you for reaching out with your question.
First of all, if you want to check your OS Build version, you can go to Settings > System > About > Windows Specifications and see OS build.
What comes to my mind are a few possible solutions to fix DISM error:
- Try also running System File Checker tool via Terminal (using administrator rights)
sfc /scannow. - Reinstall current version of Windows keeping your apps, files and settings via Settings > System > Recovery > Fix problems using Windows Update. If you don't see this option, your current version of Windows may not support it.
- In-place upgrade using Windows ISO file. You can download ISO file and do in-place upgrade without losing your data also.
- Use DISM with Windows ISO as offline source. You can also mount ISO and run DISM with specific source. Example command:
DISM /Online /Cleanup-Image /RestoreHealth /Source:WIM:D:\sources\install.wim:1 /LimitAccess(if inside ISOsourcesfolder you see install.esd, change accordingly/Source:ESD:D:\sources\install.esd:1. The number at the end of the path selects the edition of Windows (Home, Pro) - you can check and change accordingly usingDISM /Get-WimInfo /WimFile:D:\sources\install.wim)
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Best regards.