**Fix Mail-crash when using Exchange Connector** If your apple mail crashes randomly on your iMac, it could be that mail is conflicting on old settings. To solve this issue do the following: - Go to the users environment and change to the **Library** folder; - Find a folder V6 or V9 (whatever your number is) and delete it; - Delete the PersistanceInfo.plist - Start Mail; - Continue on the start screen; - Your mail should automatically coming in while it is updating. Let it finish and your should be good to go again. If you should have this after you followed above steps, go into your Internet Accounts Settings and check the Exchange Accounts. Uncheck Reminders & Notes and start your Mail APP again. Go to the **Account Settings** in Mail, select you Exchange account, go to tab **Server Settings** than, **Advanced Exchange Settings**. Turn off "**Allow insecure authentication**" and select "**None**" for the TLS Certificat. That's it! \\ \\ Enjoy, **Your ArtIT Team** \\ \\ **[[mac_osx|BACK]]**