Hi Customer,
I understand the frustration caused by this issue. In Office 365, Office 2011 for Mac needs user’s credential to activate the product. But it should not keep asking you to login. I’d like to provide the following instructions to troubleshoot this issue.
1. Can you see the product on your machine has been successfully activated? To check this, click the Office 365 settings icon from the portal and click software. You will see the information as the screenshot above shows.
If your machine has been listed here, please make sure you do not click deactivate during your using Office 2011 for Mac.
2. Where your downloaded the Office application? I suggest you download it from Office 365 portal to reduce the incompatibility issues. You can download it just in the software page mentioned above.
3. On your Mac computer, enter System Preferences> Language & Text> Region to ensure the region is selected correctly.
Image may be NSFW.
Clik here to view.
If the issue persists, can you provide the screenshots about the issue for further troubleshooting? To upload screenshots, click Use rich Formatting in this thread and select Insert Image.
Thanks,
Kevin Cui