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Running Outlook on the iMac causes the screen to flicker and eventually black out and reduce to half/split screen display.
If I don't run the Outlook app the Mac runs like clockwork.
With Outlook active, at some point the flickering begins and then gets progressively worse until the screen is completed fuzzed or it pops back to a half black screen (which continues to flicker intermittently - more often than not)
Whilst it sounds like a hardware issue (and I've ordered a new Mac thinking it was!) it appears to be tied to Outlook.
iMac (Retina 5K, 27-inch, Late 2015)
3.3 GHz Intel Core i5
8 GB 1867 MHz DDR3
AMD Radeon R9 M395 2048 MB
Mac OS 10.14.1 (18B75)
Outlook 16.19
Rebooting seems to clear it until we run Outlook again, then the cycle continues.
Using older versions of Outlook for Mac for personal email and calendar
Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.
Hi Herry,
I understand the inconvenience it brought to you. Since the issue persists, for the better investigation, we recommend you create a new thread in our forum so that we could focus on your own issue and collect more detailed information to help you do the further analysis. Thank you for your cooperation and understanding.
Regards,
Marvin
Could you guys please run a diagnose on your Mac (Holding d while booting)? I did and it says one RAM chip might be defective. Haven't tried switching to new RAM, but that might be a reason for those problems. Please run a diagnose and tell us, what your results where. Thanks.
Changed all RAM modules to verified new ones. Diagnose finds no issues now. But the Outlook problem still persists.
I have the identical problem...
upgraded disk, memory, ran diagnostics - no hardware problem found...
Fixed it by deleting outlook and using "Airmail"
Regards
Mal
Mac (Retina 5K, 27-inch, Late 2015)
3.2 GHz Intel Core i5
16 GB 1867 MHz DDR3
Macintosh SSD
AMD Radeon R9 M390 2048 MB
I had no RAM issues when running diagnostics.