Why Administrator? The ospp.vbs script modifies licensing tokens and registry keys that are protected from standard users.


Before opening the Command Prompt, ensure you have the following:


| Error | Likely cause | Solution | |--------|--------------|----------| | “The product key installed does not match” | Wrong edition key (e.g., Pro vs Home & Student) | Uninstall current key: cscript ospp.vbs /unpkey:Last5Chars (from step 3) and re-enter correct key. | | “Activation failed – 0xC004F074” | KMS activation problem / network issue | Use phone activation or check if your organization uses KMS. | | “File not found” | Wrong path or Office not installed | Search for ospp.vbs using dir ospp.vbs /s from C:\. |


Solution: Your installed key does not match the edition you have installed (e.g., trying to activate Office Professional Plus with a Standard key). Uninstall Office and reinstall the correct edition.

| Office Version | Windows Version | Typical Path | | :--- | :--- | :--- | | 32-bit Office | 32-bit Windows | C:\Program Files\Microsoft Office\Office15 | | 32-bit Office | 64-bit Windows | C:\Program Files (x86)\Microsoft Office\Office15 | | 64-bit Office | 64-bit Windows | C:\Program Files\Microsoft Office\Office15 |

The folder Office15 is critical – it indicates Office 2013 (Office 16 is 2016, Office 14 is 2010).

To confirm your path manually:


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