How do I add an image to my signatures on microsoft outlook for mac

Hi Mitch Conner,

Thank you for the detailed information. The information about your version helped a lot.

The behavior where the image insertion option is grayed out has been reproduced and appears to be linked to specific application builds rather than a configuration issue.

Many users have encountered the same issue, and it has been reported to be resolved in Version 16.108 (26041219).

I recommend updating Outlook to the latest version and checking whether this resolves the issue.

To update Outlook for Mac to the latest version:

1. Open Outlook for Mac.
2. Select Help | Check for Updates from the menu.

No Check for Updates: If you do not see Check for Updates in the Help menu, chances are your version of Outlook for Mac is from the macOS App Store; see below.

3. Click Update for Microsoft Outlook.

• Update all: Of course, you can also click Update All to have AutoUpdate download and install all available updates.
• Only AutoUpdate update: If the only available update is for AutoUpdate itself, do install this update first and check again for updates; often, the updater update is a prerequisite for other updates.
• No updates: You can click the Check for Updates button to manually check for new versions.

As an alternative, you may also consider using Outlook on the web as a temporary workaround.

However, if the issue persists, the most effective next step is reaching out to your IT admin and ask them to use their admin credentials to submit a support request through the Microsoft 365 Admin Center on your behalf.

Microsoft also provides customer service phone numbers based on your region. Your IT admin can find the appropriate contact number here: Customer service phone numbers - Microsoft Support

 This route ensures that a Microsoft support engineer can initiate a remote session to investigate backend configurations, run advanced diagnostic tools, and, if necessary, escalate the case to specialized teams with access to internal systems and logs. These backend resources are essential for resolving issues that go beyond what’s visible in the user interface.

As community moderators, we’re here to guide you, but due to privacy and security limitations, we don’t have access to the backend tools required for a full resolution. For this reason, contacting Microsoft Support via the Admin Center is the most secure and efficient way forward.

I hope this helps you resolve the issue quickly. I’m glad to assist and truly hope the information provided has been useful. Please feel free to reach out anytime if you need further assistance.  

If you find my post helpful, kindly consider marking it as the accepted answer. Doing so can assist others in the community who may have similar questions in finding solutions more quickly.  

Thank you for your kindness and contributions to the forum. 

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In Outlook for Mac version 16.107.x there was a known issue where the image option in the signature editor was grayed out and images could not be added. This was fixed in a subsequent build.

To resolve the problem, update Outlook for Mac to a newer version where the fix is included (for example, version 16.108 or later). After updating, the ability to insert images into signatures should return, and the Pictures option in the signature editor will no longer be disabled.

Once updated, use the normal signature steps:

1. On the Outlook menu, select Settings.
2. Under Email, select Signatures.
3. Create or edit a signature.
4. Use Pictures (Photo Browser or Picture from file) in the signature editor to add the logo or photo.
5. Select Save and close the editor.

References:

• Signature not allowing use of images (Mac Outlook) - Microsoft Q&A
• Create, insert, or change a signature in Outlook for Mac
• Create an email signature in Outlook for Mac