The "Product Activation Failed" error in Microsoft Word and other Office applications (such as Excel, PowerPoint, etc.) ...

When you purchase MS Office, you get an activation key with a length of 25 characters to use Office products (like Word, Excel, PowerPoint, etc.) with all the features and without interruption.

Wait for the disc to be read and the product registration and installation wizard window to appear. Type your MS Word product key into the "Enter Your Product Key" text field on the first page of ...

If you encounter Product Key installation error 0x80070005 in Microsoft (Office 365), Office 2019, 2016 or some other version, follow the solutions mentioned here.

Look for the "Product ID" just above the underlined "Microsoft Software License Terms." The Microsoft license key consists of four groups of letters and numbers separated by hyphens.