Validating instal error message

If the connection is operational, the error may be caused by another connection test performed during activation.Before attempting to activate your license, a connection test is performed by pinging This error means the current computer’s date is not within the date range that allows the Internet security certificate on the Sentinel Express server to be valid. First, check the Authorization number that you entered.This certificate is renewed on an annual basis so the date range always encompasses a year. It should be 20 hexadecimal characters with no spaces.If this is the case, you'll need to contact Microsoft support.This article was is updated based on your feedback.

Check to make sure that the computer is able to access the Internet.

If you still need help installing or activating Office 2016 for Mac, tell us about your issue in detail by leaving us a comment below and we'll try to address it in the future.

You can also contact Microsoft support to talk to a human.

This troubleshooting guide will help you identify and resolve problems you may encounter while attempting to authorize your Freedom Scientific product using Internet License Manager (ILM).

Here you can find a list of error messages that you may encounter when using ILM-based products developed by Freedom Scientific.

for directions on how to check which license you're using and how to reactivate. Can't find the installer or Office apps after downloading "An error has occurred. Please try again later." file downloaded but won't launch.