Microsoft confirms that typing in a recent version of classic Outlook can cause high CPU usage, with spikes of up to 50%.Affected users are recommended to switch to the Microsoft 365 Apps update channel as a temporary workaround.The issue occurs in Version 2406 (Build 17726.20126) on specific channels, and the Outlook team is investigating the problem.Some users with high-end systems have reported CPU temperatures reaching 95 degrees Celsius, highlighting the seriousness of the issue.