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Microsoft Says Copilot Buttons Still Missing in Classic Outlook

Microsoft confirms issues with missing Copilot and Copilot Chat buttons in Classic Outlook for some users.

By Sergiu Gatlan·Sep 16·bleepingcomputer.com·1 min read

Intelligence analysis by Qwen 2.5 (3B)

Microsoft Says Copilot Buttons Still Missing in Classic Outlook
Image: bleepingcomputer.com

Microsoft is investigating a bug causing missing Copilot and Copilot Chat buttons in Classic Outlook, affecting users with specific licenses or accounts.

Why it matters

This issue impacts users who rely on the Copilot feature for productivity and may cause frustration and inconvenience.

Microsoft is having trouble showing buttons in a program called Classic Outlook. Some people who use a special feature called Copilot can't see the buttons anymore. Microsoft is trying to fix this by giving people a way to see the buttons again.

Analysis

{"heading_1":"Investigation and Analysis","paragraph_1":"Microsoft acknowledges the issue and has provided a temporary workaround by enabling the 'Show Apps in Outlook' option in classic Outlook settings.","paragraph_2":"The Outlook Team is actively investigating the issue, which is believed to be related to the inability to locate the MAPI property PR_PROFILE_USER_SMTP_EMAIL_ADDRESS_W within the null profile section.","paragraph_3":"Affected users can also create a new Outlook profile or use alternative email clients like the new Outlook email client or Outlook Web Access (OWA), which are not affected by this bug.","paragraph_4":"Microsoft has also confirmed a separate bug that causes unexpected Outlook crashes on systems running Kaspersky Antivirus software, triggering 'Event 1000' events in the Application log linked to the Kaspersky Mail Checker (mcou.dll).","paragraph_5":"The Outlook Team is still investigating this issue and advises Kaspersky customers experiencing crashes to contact Kaspersky support.","paragraph_6":"This investigation and workaround are part of Microsoft's ongoing efforts to address and resolve issues impacting users' experience with the Copilot feature in Classic Outlook."}

Key points

  • Microsoft is investigating a bug causing missing Copilot and Copilot Chat buttons in Classic Outlook.
  • Users with specific licenses or accounts may experience this issue.
  • Microsoft has provided a temporary workaround by enabling the 'Show Apps in Outlook' option in classic Outlook settings.
The Upside

The Outlook Team is working hard to find a permanent solution and is providing a temporary workaround to help users until the issue is fixed.

The Downside

If the Outlook Team can't find a permanent solution, users may continue to experience issues with the missing buttons, which could affect their productivity.

Originally reported at

bleepingcomputer.com

Discernion covers the story. Read the full piece at the source.

Tagssecurityoutlookcopilotwindows

Author

Sergiu Gatlan

Intelligence analysis by

Qwen 2.5 (3B)

Published

Sep 16, 2026

Source

bleepingcomputer.com

Share

Topics

securityoutlookcopilotwindows

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