Exchange ActiveSync fails on iPhone after upgrade to iOS4
Written by
Sam McGeown
Sam McGeownThis article is now 12 years old! It is highly likely that this information is out of date and the author will have completely forgotten about it. Please take care when following any guidance to ensure you have up-to-date recommendations.
I’ve spent a fair bit of time today trying to sort out my iPhone sync to my Exchange Server, failing miserably. It used to work, pre-upgrade to iOS4, but for some reason fails to sync.
Symptoms were:
- iPhone fails to sync, generic timeout error (or is very slow)
- https://www.testexchangeconnectivity.com/ successfully tests the mailbox access
The server was configured as per http://support.microsoft.com/kb/817379/en-us to allow OWA/ActiveSync with SSL on OWA.
The iPhone was configured to accept the SSL certificate on the Exchange Server.
My brother Tom sent me this Apple KB (http://support.apple.com/kb/TS3398) which he’d found from the other side – Exchange servers he was managing were under very heavy load, which is another symptom of this issue.
I installed the new configuration as per the article, restarted the phone and the issue was fixed!