Running Outlook on the iMac causes the screen to flicker and eventually black out and reduce to half/split screen display.

Anonymous
2018-12-04T05:06:11+00:00

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.

Outlook | MacOS | Legacy Outlook for Mac | For home

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  1. Anonymous
    2019-10-17T04:51:24+00:00

    Have you update to Catalina?

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  2. Anonymous
    2019-10-17T05:45:33+00:00

    I have not switched to Catalina, however I did switch to Outlook low resolution and that stopped the flickering-- which was extreme.

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  3. Anonymous
    2019-10-17T06:54:54+00:00

    Microsoft has address this problem with Apple and they replied that this problem will be solved in Catalina. I have updated to Catalina with my iMac but I do not have much time on my iMac to carry out intensive test. I use my Macbook Pro more. Therefore, it would be nice if you can have a try on Catalina.

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  4. Anonymous
    2019-10-17T07:18:28+00:00

    I've asked my impacted user to switch to Catalina to investigate this issue. However, he's hesitant to upgrade, as past experiences with immediate Mac OS upgrade combined with Adobe Creative suite weren't so good.

    Whenever they feel comfortable about the upgrade, I'll report back on this issue.

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  5. Anonymous
    2019-10-17T07:27:40+00:00

    I updated to Catalina just over 1 week ago and I am pleased to confirm that this has resolved the issue. I no longer have to use outlook in low resolution mode

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