Hi Ben,
A lot of people seem to be getting that error message including Windows 7, 8 and 8.1 users.
This error can occur if the DISM.exe has been corrupted, but more typically it will occur when a series of DLL files that the DISM will call on during the process of accessing the Install.wim or Install.esd file, have either become corrupted, or are missing altogether from the location they belong in. (Why they end up missing completely is not known to me).
Normally running SFC /SCANNOW from an elevated command prompt would resolve this issue automatically, but in your case you are facing a situation where you cannot reply on the System File Checker to do its job; hence the use of DISM to first try to refresh your Windows Image in order that System File Checker can run properly.
So we find ourselves in a catch-22 where to run DISM commands you need SFC to work, but to get SFC to work you need DISM to work.
As I said though this is the most common reason for that Error 193 %1 non valid windows32 scenario.
As you still can access your Desktop you could take a look at the DLLS location to see whether my guess is indeed accurate.
- Open File Explorer
- Navigate to this location: C:\Windows\System32\downlevel
- Typically you'd see 95 files there (although that may vary depending on which version you have Home, Pro etcetera.)
- The DLLS that can mysteriously disappear but actually need to be there are as listed in the image below. If they are present its quite likely one or more of them are corrupted and need repairing:
View attachment 2830
Do these files exist in your downlevel folder?
Are you aware of any logs you have that have pointed to these files being corrupted?
Please report back on that.
Now in the meanwhile, if they are actually missing completely, then you could copy these files from a Windows 10 OS of equivalent build and architecture (i.e. If your system is Windows 10 Profession, 64-bit, Build 10586.218, then the computer you copy from must be the same Windows edition, same 64-bit architecture, same Build #) to your downlevel folder.
If on the other hand they are corrupted, they really need to be repaired as simply copying a replacement file there would not guarantee that whatever corrupted them will not just corrupt the replacements. In that event you really are facing the strong likelihood of needing to do an In-place upgrade, or having to take the worse option a completely clean install of Windows 10.
If you have not all ready done so, I'd recommend saving any important files and noting down specific settings you like to use for your Apps because if we ultimately end up doing a Clean Install that information will be lost during the installation process.
Regards,
Regedit32