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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.
Apple replaced my logic board twice and display once under AppleCare for this issue. Over $2,000 on Apple's dime for parts and labor. This is hilarious that neither Microsoft's Office team or Apple is flagging this issue for their technicians.
So far the low-resolution works for the two iMacs here.
I find that interesting that the Outlook app would actually have an option to run in low-resolution? Why would someone select that option on purpose? Was there an issue in the code with high-resolution displays and Microsoft engineers just threw that option in, in case someone had that problem?
As far as "first time to hear about it," I guess we all need to keep reporting to this thread and maybe they'll notice the views and comments, and do something for us.
Hi Matt,
After replacement, is the problem solved?
Not at all. It's 100% a software issue specific to our iMac model. Nothing to do with replacing the hardware.
Same issue - mine flickers then turns white - then flickers some more...only when Outlook is open. Otherwise my iMac is flawless. I keep all everything updated.
This is a Microsoft issue. Know I have to get rid of outlook and use something else but was hoping to read that Microsoft is working on this issue. It is not an Apple issue and calls to replace an iMac with a new machine to solve a microsoft problem strikes me as absurd.