I'm really frustrated with finding solutions for the DISM tool when I encounter the 'source files cannot be found' error on a server. I've read countless articles suggesting methods that just don't seem to work. First, they say to use an ISO of the OS, but every time I do that, it fails since it's not the same version as what's currently installed on the machine. Even building an ISO from the exact build and updates doesn't work. Secondly, I've also tried using the WinSxS folder from another computer, but again, it results in the same error. If anyone out there has successfully run DISM with the command 'DISM /online /cleanup-image /restorehealth' after hitting that error, I'd love to know how you did it. I need DISM to work so I can get updates installing again on the server!
5 Answers
Make sure you're running the command with admin rights and check that your paths are absolutely correct. When I last used it, I mounted the ISO directly on the problem machine and it worked fine.
A few tricks I found useful: First, run an SFC check. Then try commands like 'DISM /online /revertpendingactions' or 'DISM /online /Cleanup-Image /StartComponentCleanup /ResetBase'. Just a heads up though—using the /resetbase option means you won't be able to uninstall previous updates.
I’ve successfully run DISM using a mounted ISO without issues, so it can work! What exact command are you trying? Are you sure you haven’t got any additional switches mixed up?
Looks like your WSUS settings might be causing conflicts. I had a similar problem where even specifying a local source, WSUS would still try to pull updates from itself. You might want to check and toggle the 'UseWUServer' registry key if that's the case.
DISM can be a pain! Honestly, if you constantly get errors, rebuilding might be the best bet. Sometimes it’s just not worth the hassle trying to fix something that’s repeatedly failing.
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