office maxing out CPU

Dawn Marie Stanford
Dawn Marie Stanford used Ask the Experts™
reported issue: "My install of Office would frequently use up 100% CPU periodically throughout the day, limiting my ability to work. "

user is on a mac but he uses his email on windows through parallels.

i had him update office, and then run an online repair (though programs and features) but he said it actually is worse.

system details: macbook pro, osx high sierra 10.13.3, 2.7 ghz, 16 GB memory, Parallels 13.3.0, Windows 10 VM all updates applied (assigned 8GB of Memory),  Office 2016 all updates applied, HD size 211GB with 65.5 GB free.
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Try these first: Reset the SMC, Then reset the PRAM.  

  1. Shut down your Mac.
  2. Remove the battery. If you need help removing the battery, contact an Apple Authorized Service Provider or Apple Retail Store.
  3. Press and hold the power button for 5 seconds.
  4. Reinstall the battery.
  5. Press the power button again to turn on your Mac.

Restart your Macbook Pro.
Press and hold command option p r until you hear the Mac chime 3 times, or see the apple logo appear 3 times if you've permanently turned off the chime sound at startup.
Can the user open up the Activity Monitor app on their computer and leave it running in the background.

When the CPU hits MAX they can take a screenshot of the top processes .. as there could be a rogue process at issue here.
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Validate the task manager to see which processes or services are consuming the most resources.

Run a scan with your antivirus software, to validate or discard any malware or malicious software on your computer

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Dawn Marie StanfordSr. Operations Coordinator


the person was able to isolate that it was outlook that was maxing out the CPU
Is Outlook still maxing out the CPU?  Did you fix it?
If its still an issue, report back and we can maybe advise on further steps.  Outlook 2016 on OSX is a bit of a beast of a mail client.

You could check and see if the user has a LARGE mailbox or multiple accounts setup or a very frequent SYNC process setup etc.

The Console App on OSX will have all the logs from the system and apps and you might find a cause/clue as to the issue if you analyse the results from the time when the CPU max-out occurs.
Dawn Marie StanfordSr. Operations Coordinator


thank you all for reaching out on this with suggestions.
the individual is slow to get back to me so i will close this out for now and circle back if the issue persists.
kind regards-

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