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Outlook for Mac Bug Disables Font Selection in Emails

Outlook for Mac Bug Disables Font Selection in Emails

First seen 10 Jul 2026, 02:46 UTC • •
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ThreatCluster AI
ThreatCluster •October 1, 2026 at 14:16 UTC
  • •Outlook for Mac version 16.110 has a bug preventing font changes in emails.
  • •Users are forced to use the default font, Arial, despite selecting different fonts.
  • •Workarounds include rolling back to an earlier version or using Word for formatting.

A recent update to Outlook for Mac (version 16.110) has introduced a bug that prevents users from changing fonts while composing emails. The application ignores font-selection commands, forcing users to remain in the default font, Arial, regardless of their input. This issue affects users' ability to format emails, which is particularly problematic for professional communications. Workarounds include rolling back to an earlier version of Outlook or composing messages in Word and pasting them into Outlook. Microsoft has acknowledged the issue, and reports indicate that the problem does not exist in beta or preview versions of the software. Users are encouraged to report the problem through Outlook's help feature. A fix is anticipated but has not yet been released as of October 1, 2026.

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Timeline

2026-07-08
Bug confirmed by Microsoft moderator
A Microsoft moderator acknowledged the font selection issue on forums, confirming user reports.
Theregister
2026-07-09
Bug reported by multiple outlets
Both The Register and Feeds.4Sysops reported on the font selection bug affecting Outlook for Mac.
Feeds.4Sysops

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Common questions

Which versions of Outlook for Mac are affected?
The bug affects Outlook for Mac version 16.110, with users experiencing issues when composing emails.
What are the workarounds for this issue?
Users can roll back to an earlier version of Outlook or compose emails in Word and paste them into Outlook.
Has Microsoft acknowledged this issue?
Yes, Microsoft confirmed the issue through a moderator on their forums and is working on a fix.