When you install Microsoft Office Professional Plus with subscription licensing, you must verify your subscription by signing in with your Microsoft Online Services ID and password.
To verify your subscription, you must have the Microsoft Online Services Sign-in Assistant installed on your computer. If you don’t have the Sign-in Assistant installed on your computer, Office attempts to install it for you. If for any reason this installation is not successful, you receive a dialog box with additional instructions.
Important After 30 days of not being verified, your Office product loses all editing functionality, also known as Reduced Functionality mode.
What do you want to do?
Verify that the Sign-in Assistant is installed
- In Control Panel, click Programs, and then click Programs and Features.
- Verify that Microsoft Online Services Sign-in Assistant is in the list.
- Do one of the following:
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Uninstall the Sign-in Assistant
If the Sign-in Assistant is installed, you should uninstall it, and then reinstall it.
- In Control Panel, under Programs, click Uninstall a program.
- Click Microsoft Online Services Sign-in Assistant, and then click Uninstall/Change.
- Follow the steps in the Install the Sign-in Assistant section.
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Install the Sign-in Assistant
Click the following link to install the Sign-in Assistant for both 32-bit and 64-bit version operating systems.
- Microsoft Online Services Sign-in Assistant.
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