Outlook 2010 on Windows 7 shows there is a problem with the proxy server's security certificate

Hello,
When I connect with Outlook 2010 to Exchange 2010 i get the Message "There is a problem with the proxy server's security certificate".
Starting situation:

• Mac OS Yosemite Vers. 10.01.2 up to date
• Parallels Desktop for MAC Version 10.1.4 (28883)
• Windows 7 Pro SP1 up to date
• Office 2010 SP2 up to date

Follow Steps i have done:

• Windows 7 and Office 2010 are installed in Parallels Desktop for MAC (default settings)
  
• set up Outlook Account of a hosted Exchange account with default parameter - no Problems
• first start of Outlook - Error Message occure "There is a problem with the proxy server's security certificate" -> Outlook can not connect to the Exchange
• next start of Outlook - Outlook connect successful to the exchange an download mails
• a third time Outllok starts with the error message and get not connceted, also the fourth, fiveth,... time. Sometimes it connects, sometimes not
• when I switch to online Mode no error occurs
• OWA works fine and I havn't any certificate issues
• I have try sereral setting in Parallels - no change of behavior

I am happy about every notion.

Thanks
Seb@stian

 

Hi Sebastian,
Please follow the instructions suggested at http://kb.parallels.com/112983 and check how it goes.