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Microsoft Admits Outlook Bug Causing Severe CPU Spikes

4/16/2025

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Summary

Story summary

Microsoft has acknowledged a frustrating bug in Outlook Classic that spikes CPU usage by 30-50% during typing, leading to annoying freezes. First reported in November 2023, this issue still lingers without a permanent fix. Users with older computers can temporarily alleviate the problem by switching to the Semi-Annual update channel.

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Story summary

Microsoft has acknowledged a frustrating bug in Outlook Classic that spikes CPU usage by 30-50% during typing, leading to annoying freezes. First reported in November 2023, this issue still lingers without a permanent fix. Users with older computers can temporarily alleviate the problem by switching to the Semi-Annual update channel.