Hi @Naples, Pat J (DMV),
Thank you for reaching out regarding the issue you are experiencing with the Text Box feature in Outlook.
Based on your description, this may be related to how Classic Outlook handles text boxes and drawing features in certain compose modes and message formats.
To help identify the cause of the issue, you can review and try the following steps:
1/ Confirm the email format is set to HTML
In Outlook, text boxes, shapes, and several options under the Insert tab are only available when the message is composed in HTML format.
To check this, you can:
- Open the email you are composing.
- On the ribbon, go to Format Text > select HTML.

- Return to the Insert tab and try Text Box > Draw Text Box again.
2/ Pop out the message into its own window
- If you are replying or forwarding within the Reading Pane, select Pop Out from the message header.

- Once the message opens in a separate window, go to Insert > Text Box > Draw Text Box.
- Click inside the message body and attempt to draw the text box.
3/ Test Outlook in Safe Mode
- Press the Windows key + R to open the Windows Run dialog.
- In the Open box, type Outlook /safe, then choose OK.
- In the Choose Profiles dialog box, accept the default setting of Outlook and choose OK.

- If prompted, enter your password and choose Accept.
If Outlook is able to start in safe mode, then the problem is likely with one of your add-ins. You'll need to disable all of your add-ins before restarting Outlook, as described in the following procedures:
- In the upper-left corner of Outlook, choose File > Options > Add-ins.
- At the bottom of the View and manage Office Add-ins, make sure the Manage box shows COM Add-ins, and then choose Go.

- Take a screenshot of the selected add-ins listed under Available Add-ins and save the image to a location of your choice.
- After you've captured the titles of the selected add-ins, clear all selected check boxes, and then choose OK. Note: Please click a check box to clear it. Don't select an add-in and choose Remove.
- Choose File > Exit.
If the program loads properly, it's likely that one of your add-ins is the source of the issue and you need to identify which one. To determine which add-in is the problem, enable one add-in at a time:
- Press the Windows key + R to open the Run dialog.
- In the Open box, type Outlook.
- In the upper-left corner of Outlook, choose File > Options > Add-ins.
- Select the check box next to an add-in you want to re-enable and then choose OK.
- Repeat all steps until you've re-enabled all of the original add-ins and revealed the source of the error.
4/ Repair the Office installation
If the issue persists, repairing the Office installation may resolve underlying application issues. For reference: Repair an Office application - Microsoft Support
5/ Contact Microsoft Support
If the issue continues after applying these steps, the best next step would be to have your IT administrator open a support ticket with Microsoft via the admin center. A technical support engineer can then initiate a remote session, review backend settings, and run diagnostics. If needed, they can escalate the case to specialized engineering teams who are well-equipped to perform advanced troubleshooting and provide targeted solutions.
As moderators, our primary goal is to provide helpful guidance and support through general troubleshooting steps. While we don’t have access to internal systems or administrative tools required to resolve account-specific or backend issues, we truly appreciate your understanding of these limitations. We genuinely hope the information we share helps point you in the right direction, and we're always here to assist as much as we can within our scope.
For guidance on how to request support, please share the guidance in this link with your admin: Get support - Microsoft 365 admin.
I hope this information is useful. Thank you for taking the time to raise this question. If you need any further clarification or assistance, please feel free to leave a comment under this post.
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