Hi Tom Laverick,
Thanks for reaching out to Microsoft Q&A Forum. I understand that cmd.exe will not launch on your Windows 11 Home device, it appears to be missing from System32, and you do not have administrator rights on the PC.
Please make sure you already tried the Q&A Assist steps. In addition, please try the following.
Before proceeding, I’d like to narrow this down a bit to better understand the scope:
1, When you try to open Command Prompt, do you receive any error message, or does nothing happen at all?
2, Are you able to open other built-in tools such as PowerShell or Windows Terminal, or do they also fail to launch?
In the meantime, you can try these steps:
1, Check whether Windows is in S mode
- Open Settings, select System, then Activation
- Review whether the device is running in S mode, which can restrict access to command-line tools
2, Use Windows Recovery Environment to access Command Prompt
- Restart the PC and interrupt the boot process to enter recovery
- Select Troubleshoot, then Advanced options, then Command Prompt
- Check whether cmd.exe is accessible from recovery
3, Run an offline system file check from recovery
- In the recovery Command Prompt, run the system file checker against the offline Windows installation
- This can repair missing or corrupted system files without requiring sign-in to Windows
4, Create a new local user account if possible
- If there is any other account with administrator rights on the PC, ask them to create a new local user account for testing
- Sign in with the new account and check whether Command Prompt is available
5, Verify device ownership and management status
- If the PC was previously owned or configured by an organization, system tools may be restricted by policy
- In that case, only the administrator or device owner can restore access
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