Diskshadow is part of the Windows Backup components.
See:
This browser is no longer supported.
Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support.
For some reason, the Diskshadow program is missing. It is not in System32 or SysWOW. How can I get it back?
Hello
Based on your description, here are some troubleshooting steps you can try to narrow down the issue and hopefully resolve it:
Open the Control Panel, go to Programs > Turn Windows features on or off, and see if the "Volume Shadow Copy" feature is checked2. If it's not, check it and click OK to install it.
If the Volume Shadow Copy feature is already checked, try reinstalling it. Uncheck the box, click OK to uninstall it, and then check it again and click OK to reinstall it.
Open Command Prompt as an administrator and run the following command to check for and fix any corruption:
DISM /Online /Cleanup-Image /RestoreHealth
This can sometimes fix missing system files.
Ensure your Windows is fully updated. Go to Settings > Windows Update and check for updates. Install any pending updates and restart your computer.
If none of the above step's work, you might need to consider reinstalling Windows Server. Make sure to use the correct installation media for Windows Server, not the consumer version.
Best regards
Yanhong
=====================================
If the answer is helpful, please click "Accept answer" and upvote it