


Whatever the reason for Outlook not opening on your device, there are several simple and advanced troubleshooting steps you can use to fix Outlook issues. A bug in the app, which requires an update.My ost file is 30GB.There are several reasons why Outlook might not load or work correctly. Performance degradation is obvious when perfuming high I/O operations on large DBs in the current environment. My suspicion is that there is a correlation between the side channel mitigations deployed by Intel re ME firmware/drivers/software, together with MS OS mitigations and SEP updts as they relate to latency on large DBs and high I/O.

Perhaps the crashes will recover if I let the app continue in the “not responding” state for 5 to 10 mins? Still not acceptable, but we need to know.Note: I have NOT removed the App Device control component yet.No associated logs matching those times either in Event Viewer or SEP. Example, click on an email in the Inbox/right click/forward=crash/temporary freeze. They usually happen when I attempt an action with email after a long period of not using Outlook. Crash 9:10 am: 5 mins to recover: I have now experienced several recoverable crashes.Next to do: Remove Application and Device control component comes under Proactive Threat Protection.I will test to unrecoverable crash, the run diagnostics, then.2:10 pm PST Outlook recovered by itself.Run Symantec Diagnostic Tool & upload.Crashed 1:58 pm: Action: Reply to email w/o attachment.Still testing after recovery, ok so far (15 mins).Checked Control Logs (Client Mgmt): looked clean.11:40 am Outlook crashed, but recovered: action: fwd email and popout.test (if still crashing, next REMOVE the SEP firewall and test}.REMOVED Outlook Auto Email scanner from the client:.Suspected Bug: See below: SEP cause Outlook to hang and/or crash: Status: testing.Connection conflict does not exist after install. After installation (i.e., after preauthentication connection, PIM, AAD/Conditional Access/MFA), re enable SEP. Known Bug: SEP prevents pre authentication connection of MS Office (Outlook )ProPlus C2R on initial installation or repair.Only difference is I am using Win10 Pro and MS Office 2016 ProPlus C2R, Monthly Targeted updts: See my notes below: Working with MS Enterprise TS and SEP TS.
