This article discusses how to troubleshoot the activation issues in Microsoft Office from Office 365. Activation fails and you may receive one the following error messages:
We are unable to connect right now. Please check your network and try again later.
Sorry, we can’t connect to your account. Please try again later.
If you have problems activating Office from Office 365, follow these steps to help troubleshoot the issue. After you follow each step, check whether the issue is fixed. If the issue isn't fixed, go to the next step.
For more information, refer to Troubleshoot activation failures.