Fixing the error message “This operation has been cancelled due to restrictions in effect on this computer. Please contact your system administrator”

When clicking on a URL the message “This operation has been cancelled due to restrictions in effect on this computer. Please contact your system administrator” could appear.

This can be fixed using the following:

1. Click on the Start button, type regedit and then press enter
2. Click Yes on the UAC message
3. Browse to HKEY_CURRENT_USER\Software\Classes\.html
4. Right click the value for the .html key and select Modify
5. Change the value from “ChromeHTML” to “htmlfile” (or from FireFoxHTML to htmlfile)
6. Click Ok

 

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