The error message "The source files could not be found" suggests that the system is unable to locate the installation source files required to restore the feature. In this case, you can try the following steps:
Check if the installation media (e.g., DVD or ISO) is still available and accessible. If yes, insert it into the system and use the "Source" option in the DISM command to specify the location of the files. For example:
DISM /Online /Cleanup-Image /RestoreHealth /Source:D:\sources\install.wim
where "D:" is the drive letter of the installation media.
If the installation media is not available, you can try downloading the appropriate ISO file from the Microsoft website and use it as the installation source. Make sure to download the correct version and edition of Windows Server 2012 R2. Once downloaded, you can mount the ISO file and use the "Source" option in the DISM command to specify the location of the files. For example:
DISM /Online /Cleanup-Image /RestoreHealth /Source:F:\ /LimitAccess
where "F:" is the drive letter of the mounted ISO file.
If the above steps do not work, you can try resetting the Windows Update components. Open an elevated Command Prompt and run the following commands:
arduinoCopy code
net stop wuauserv
net stop cryptSvc
net stop bits
net stop msiserver
ren C:\Windows\SoftwareDistribution SoftwareDistribution.old
ren C:\Windows\System32\catroot2 catroot2.old
net start wuauserv
net start cryptSvc
net start bits
net start msiserver
This will stop the Windows Update services, rename the SoftwareDistribution and catroot2 folders, and restart the services. Then try running the DISM command again.