Windows – Why can’t I change Window 7 registry key

windows 7windows-registry

I want to change a Windows 7 Registry key in HKEY_LOCAL_MACHINE->SOFTWARE->Classes->CLSID->B54F3741-5B07-11cf-A4B0-00AA004A55E8} -> InprocServer32. I ran regedit as administrator. But when I was trying to modify that key, it doesn't allow me to change and reports error as

Cannot edit: error writing the value's new contents

So why can't I change the registry key even in administrator mode? How to solve this problem in Windows 7? I also disabled my Anti-Virus but it didn't help.

Best Answer

Because by default Administrators only have read permissions for that key

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You can open the permissions window by right clicking on InprocServer32 and choosing Permissions....

Now to head off a XY Problem, why are you wanting to changes the value in the first place?

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Windows – Cannot Create Key: Error Writing to the Windows 7 Registry

It might be a matter of permissions.

Try to run regedit as Administrator and follow the directions in this article:

Grant Read Write (Full Control) Permissions on Registry Keys (Fix Cannot Import and Access Denied Error in RegEdit)

Windows – Unable to delete registry key

Regestry keys, like files, have permissions on them. Right click on the folder for the key you are trying to find out about and see if you can click on permissions.

If you can not even do that there is a hack you can do to run a app as SYSTEM instead of administrator.

Go download PsExec. Open a command prompt as administrator (by right clicking on the command prompt shortcut and clicking run as administrator). Run the following command:

psexec -i -d -s c:\windows\regedit.exe

This will launch regedit with the system account (make sure you do not have any copies open already) and see if you are able to delete those folders.

P.S. Check to see if solidworks created any users or groups on your machine and delete them (delete the corresponding folder in the C:\Users folder too), I had a similar issue when the user SQLServer installed got corrupted, the only sign was a registry key could not be created/deleted during the setup process.

Best Answer

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Windows – Cannot Create Key: Error Writing to the Windows 7 Registry

Windows – Unable to delete registry key

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