Microsoft warns users that using the Classic Outlook can cause COU spikes.
In a post on Microsoft ’s Support blog, the company warns that typing in a recent version of classic Outlook can lead to high CPU usage. The issue could cause CPU usage to spike by up to 50%, and the company recommends switching to the Microsoft 365 Apps update channel as a temporary workaround.
The problems occur when composing an email in Version 2406 on the Current Channel, Monthly Enterprise Channel, or Insider Channels. Affected users report CPU usage increases between 20% and 50%, which can also raise power consumption. Microsoft says the Outlook team is investigating and will provide further updates as they become available.
Recommended Videos Microsoft also suggests a workaround that involves switching to the Semi-Annual Channel, where the issue has not been detected. The affected users say that possible solutions, such as turning off add-ins, graphics acceleration, and spell-check, did not fix the problem. The software giant provides a guide with the necessary steps to switch to a different channel to avoid these problems.
Related Even high-end systems aren’t immune. Some users with Intel Core i9-14900HX processors report CPU temperatures hitting 95 degrees Celsius, with nothing more than a ‘New Message’ window open. These reports go back as far as November of last year, but we hope a permanent solution is found soon since an overheated CPU can cause all sorts of issues, such as crashes and freezes.
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