This guide installs and activates Microsoft Office 2021 Professional Plus for Windows bought from license4u.co.
- Uninstall any existing Office from Settings > Apps and restart the PC. Running two Office versions side by side is the most common reason setup fails.
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Download and install using the link in your delivery email. Professional Plus 2021 installs via the Office Deployment Tool: run
setup.exe /download configuration.xmlthensetup.exe /configure configuration.xml, withProPlus2021Volumeas the product ID. The configuration file is supplied with your order. - Enter your key: open Word, go to File > Account, click Change Product Key and type the 25-character key.
- Check that File > Account shows "Product Activated" and Office Professional Plus 2021.
Command-line activation
From an administrator Command Prompt in C:\Program Files\Microsoft Office\Office16, run cscript ospp.vbs /inpkey:YOUR-KEY, then cscript ospp.vbs /act. cscript ospp.vbs /dstatus shows the current licence state.
If activation fails
Confirm the installed edition is Professional Plus 2021 (not Home and Business, Home and Student or a 365 build) and that the PC is online. If it still fails, email support@license4u.co with your order number and the /dstatus output.
Buy the licence here: Microsoft Office 2021 Professional Plus for Windows.
