Open Outlook in Office 365 or 2016 and they try to sign-in. In Outlook safe mode, navigate to File> Options> Add-Ins. Clear the Lync cache, by deleting the SIP folder and files in the Tracing folder. Press the Enter key or click OK to run Outlook in safe mode. Scroll to Export address filtering (EAF) and turn it off. Find outlook.exe in the list, select the entry to expand, and select Edit. Switch from System settings to Program settings. Scroll down to the Exploit protection section and select Exploit protectionsettings. Sleep/Wake UUID: 34AEE93B-D60B-443B-AAAF-F2E8F15366C5Ĭrashed Thread: 5 Dispatch queue: 2.HTTP2StreamĮxception Codes: 0x0000000000000000, 0x0000000000000000Īssertion failed: (!fHeadersBegan), function _onqueue_beginHeaders, file /BuildRoot/Library/Caches//Sources/CFNetwork/CFNetwork-760.8/HTTP2/SHTTP2Stream.cpp, line 720. Press Windows + R and type Outlook.exe /safe. In the Start menu, search, and open Windows Security. Path: /Applications/Skype for Business.app/Contents/MacOS/Skype for Business Let me know if the complete crash report is needed.

I'm not running any VPN nor there is any other communication problem while accessing any other site on port 443. From what I can see on the detailed crash report the problem is related to an Secure HTTP (HTTPS) issue since that thread is the one crashing. It makes it easier to look up if one gets logged. If you see the Event 1001 please post that with the crash bucket. Each time Outlook crashes that creates an Event 1000 and often there will also be a Windows Event 1001 at the same time. Today the latest version of SFB, 16.15.166, started crashing upon starting up. Please post the crash event in the Windows Event Viewer, Application Log.

Outlook and skype keep crashing