If you’re seeing a “Service unavailable” message that leads to the page offline.officeapps.live.com/outage.html, it typically means that Office cannot validate your license online.
If you purchased your license from us, this issue is almost always caused by not following the correct installation or activation steps.
How to fix it
Click the button below:
Choose the exact product you purchased from the list.
Follow the instructions step by step — carefully and in order.
Once you complete the proper steps for your specific product, the issue will be resolved and Office will be fully activated.