Outlook for Mac running very slowly after upgrade to Sonoma on MB Pro with M1

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Level 1

8 points

Outlook for Mac running very slowly after upgrade to Sonoma on MB Pro with M1

After upgrading to Sonoma 14.0 about a week ago, performance on my MBP degraded dramatically. I primarily use the MS Office 365 Suite, and almost any file opening or update is very slow. If I start a new email in Outlook for Mac, I get the spinning wheel for a few seconds and then it's 30-45 seconds longer before I can enter a "To" address in the email.

On the Apple Activity Monitor, I don't appear to be pushing limits on CPU, Memory or Disk, and I don't have antivirus on the machine. I do have the Trend Micro security suite which is a requirement at my company, but I also had that suite installed under Ventura and the system performed very well.

Would appreciate any advice on how to further diagnose and resolve the issue.

MacBook Pro (M1, 2020)

Posted on Nov 6, 2023 12:58 PM

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Answer 1

Top-ranking reply

Daisytou

Level 1

4 points

Nov 21, 2023 08:02 AM in response to DR23

Is there a fix? I'm having the same problem. Microsoft 365 suite on iMac Sonoma is incredibly slow and lags often. Opening an email or switching folders takes about 30-60 seconds while the wheel spins. Word and Excel are worse.

Any advice to fix?

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Answer 2

Jan 21, 2024 08:37 PM in response to mermaracder180

@mermaracder180 ... Thank You !... I just ran Office-Reset on my macbookpro (M1) ... HUGE improvement with my Outlook (Office 365 Install) ... I'll check Outlook again in the morning to be sure I'm not dreaming.

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Answer 3

DR23 Author

Level 1

8 points

Nov 28, 2023 08:04 AM in response to BDAqua

Thanks BDAqua - sorry I just found your latest post. Trend Micro is required by our IT desk, and I was worried that could be part of the problem. My lagging and instability has continued to worsen to the point that the browser is all I'm able to use now. I've uninstalled and reinstalled Office 365 many times now and all of the Office apps crash almost immediately upon opening.

I'll try removing more Login items, but I sense the problem is more complicated than that. I also now am experiencing disappearing icons on the dock and occasional episodes where the screen background goes to bright yellow and stays that way until I reboot.

I was going to try a system reset next as a last resort - our IT team is saying they'll provide a new laptop, but this one ran very smoothly right up until I installed Sonoma, so I have to believe this is a software issue...

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Answer 4

DR23 Author

Level 1

8 points

Nov 9, 2023 01:06 PM in response to BDAqua

Thanks very much for responding, BDAqua

Please find attached the EtreCheck report you suggested.

EtreCheck Report

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Answer 5

BDAqua

Level 10

250,031 points

Nov 6, 2023 07:45 PM in response to DR23

Hello DR23..

We need to see what all is running, a report from this will not display any personal info...

Using EtreCheck - Apple Community

EtreCheck is a FREE simple little diagnostic tool to display the important details of your system configuration and allow you to copy that information to the Clipboard. It is meant to be used with Apple Support Communities to help people help you with your Mac. It will not display any personal info.

https://www.etrecheck.com/

Thanks for Old Toad’s etrecheck instructions…

https://discussions.apple.com/thread/255121100?answerId=259529290022#259529290022

Use the Note tool on the bottom of this editor's toolbar, as shown in the image, to copy and paste the output from EtreCheck. In a Reply before you click post, look for this to add longer texts...

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Answer 6

BDAqua

Level 10

250,031 points

Nov 21, 2023 08:14 AM in response to DR23

Whew, sorry I missed this...

i suggest you uninstall Trend Micro, then run etrecheck again to see if the uninstaller left any Trend Micro files.

Also, can you reduce the number of items running, especially Login Items?

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Answer 7

Nov 29, 2023 11:03 AM in response to DR23

@DR23 -

Give this a try:

https://office-reset.com/

It's free - made by a MS employee and fixes almost any issue.

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Answer 8

May 28, 2024 02:08 PM in response to DR23

Looking for feedback on the office-reset - ran both 1.9 and 2.0 and neither work - I select outlook reset and wait many minutes and all Im getting is "waiting for other installations to compete"

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Outlook for Mac running very slowly after upgrade to Sonoma on MB Pro with M1

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