No Exchange iOS sync after upgrade to Sophos Mobile 9.0.2

Question

Hello, 
 we have upgraded Sophos Mobile from 8.6.5 to 9.0.2. 
 Now no Exchange E-Mail sync on all iOS devices. 
 Is this a known issue? 
 Please help! :/ 
 Gero

FloSupport · Accepted Answer

Hi Everyone, 
 Thanks BrucekConvergent for initially sharing these instructions. 
 Here's the KBA that was created: 
 
 Sophos Mobile 9.0 - After updating the server to version 9.0.2 iOS devices cannot synchronize email anymore 
 
 Please inform me (via this thread or PM) if the instructions outlined are able to resolve your issue. I will provide more updates regarding this issue, as more information becomes available. 
 Regards,

Gero Kotzur · Answer

Hi, 
 
 no, you are right. http2 is the problem. 
 I had a remote session with sophos technican. 
 But you have to change it two times from true to false in the "smc-config" file on the MDM Server 
 and restart the service. Change in browser developer tools is not working. 
 
 But there is another problem with the header. 
 After change no password question popup on the clients. 
 They have to type their password in account settings. 
 
 I wait for a hotfix and let the config without eas proxy on my devices. 
 
 Gero

BrucekConvergent · Answer

Yep, official answer: 
 
 To disable HTTP/2, perform the following steps: 
 
 Go to the Server where Sophos Mobile is installed 
 Stop the Sophos Mobile service 
 Go to the folder %MDM_HOME%\wildfly\standalone\configuration\ 
 Create a backup of the existing "smc-config.xml" in a different location 
 Edit the "smc-config.xml" 
 Search for enable-http2="true" and change the value from "true" to "false" 
 Repeat the search as two entries have to be changed 
 Save the file 
 Start the Sophos Mobile service

Adam Nickel · Answer

Restored server to a backup with version 8. 
 All devices sync and emails working correctly. Only issue is "Mail Days to Sync" on iOS devices will only allow 3 days even though the profile on the server is set to 30. 
 Updated server to version 9 
 Made changes to http2 from true to false as the knowledge base states. 
 Emails are flowing to iOS devices after change. 
 Attempt to enroll an ipad which is successful 
 Pushed out email profile to ipad and received the prompt for password 
 Entered password correctly 
 Newly enrollled ipad is NOT receiving email even though other iOS devices, which were enrolled before the version 9 update are receiving emails. Same email profile on both.