The name cannot be resolved, the connection to Microsoft Exchange is unavailable (Outlook 2010 client)
How to fix Outlook to The connection to Microsoft exchange is unavailable. Outlook must be online or connected to complete this action- Internal connect
![Exchange 2013 certificate error: There is a problem with the proxy server's security certificate. « MSExchangeGuru.com Exchange 2013 certificate error: There is a problem with the proxy server's security certificate. « MSExchangeGuru.com](https://msexchangeguru.com/wp-content/uploads/2015/10/100215_1505_Exchange2011.png)