I am trying to log into Outlook 2010.  It is telling that the "connection to the Microsoft Exchange is unavailable.  Outlook must be online or connected to complete this action.  I can't figure what happened to begin...up until the other day I was using Outlook just fine.  I cannot do anything in the app because it closes.  So how am I suppose to connect to the internet and how do I connect to the Microsoft Exchange?

Hi,

Please check the connection to Exchange by Remote Connectivity Analyzer:

https://testconnectivity.microsoft.com/

Sometimes the issue may be caused by an improperly configured software firewall. Disable the software temporarily to check if it is related.

You can also reboot the Exchange Server to check if this fixes the issue.

Regards,

Melon Chen
TechNet Community Su