What to do if I receive an error message
Note the exact message and any error code (codes often start with 0x). Take a screenshot. See How to take […]
Troubleshooting
Troubleshooting
Product key does not match the installed version
A product key only activates the edition it was made for. Common mismatches: Windows Home key on Windows Pro: won’t […]
Troubleshooting
Office installation problems
If Office won’t install or the installer stops partway, check the following: Internet: the installer downloads files as it runs, […]
Troubleshooting
Office activation error
Signs that Office isn’t activated include an “Unlicensed Product” or “Product Activation Failed” message, or features being disabled. Try these […]
Troubleshooting
Windows activation error
Windows shows an error code when activation fails. Some common ones: 0xC004F050: the product key isn’t valid for this installation. […]
Troubleshooting
My product key does not work
If your key is rejected, work through this checklist: Characters: copy and paste the key. Look-alike characters such as B […]
Installation & Activation
What to do if activation fails
Most activation problems have simple causes. Check these in order: Internet connection: activation needs to reach Microsoft’s servers. Typing: paste […]
Installation & Activation
How to upgrade Windows editions
You can upgrade Windows 11 Home to Pro, or Windows 10 Home to Pro, without reinstalling or losing your files. […]
Installation & Activation
How to uninstall an older Office version
Removing older versions before installing a new one prevents conflicts and activation problems. On Windows 11 or Windows 10 Open […]
Installation & Activation
How to check whether Windows is 32-bit or 64-bit
Press Windows key + I to open Settings. Go to System → About. Look at System type. It says whether […]