

Since Office 365 is a cloud-based app, it’s easy to fix this error. Otherwise, you’ll have to send a request to the system admin. You can do it by yourself if you’re the admin.
#How to connect outlook 2016 to exchange 2010 password

It happens typically when you use the same email address and password for your Office 365 account and for your third-party provider’s login.

If you’re an Office 365 user and you get this message, the most likely cause is a conflict in your username and password. When you see this error message, simply try one of the below options and, hopefully, one of these should fix it for you. If you’re like me, you’ll probably go through the different possibilities in your mind and try to zone in on the most likely cause of the problem. Well, “connection to Microsoft exchange is unavailable” is one such cryptic message that doesn’t tell you much about why there is no connection. Isn’t it always annoying when we get an error? And it’s especially galling when the error is a cryptic one that doesn’t tell us the cause of the problem.
