"Show Original Size" button blocking signature every email

Hi @Kevin Winslow, 

Thank you for reaching out and for sharing the detailed description and the screenshot. I can absolutely see why this becomes disruptive when you are trying to roll out a consistent company signature. What you are seeing is a Outlook compose experience issue that has been reported by other users. In those reports, the “Show original size” box shows up in the compose window and can end up sitting on top of the first line of the message or the signature. In many cases, it is linked to the signature content itself, even when it looks like it is covering “normal text.” 

Below are the practical fixes that have worked for others, starting with the fastest. 

1. Remove or move the box from inside the signature editor 

Several users have confirmed that if the “Show original size” box is visible inside the signature editor, you can treat it like an object and move it out of the way 

To do this, please follow these steps: 

• Open Settings (gear icon), then navigate to Accounts > Signatures. 
• Click inside the signature editor. If you see the “Show original size” box, try clicking it and dragging it away from the signature content. 
• Select Save, then create a new email to test the change. 

2. Recreate the signature 

If the box returns, recreating the signature as the next step if moving it does not resolve the issue. A practical way to do this without losing your work is: 

• Copy your current signature content into a separate document for safekeeping (text, logo, disclaimer, links). 
• Create a brand new signature and rebuild it by pasting content back carefully. This helps avoid reintroducing problematic hidden formatting. 
• Save it, set it as the default, then test by creating a brand new email and also replying to an email thread. 

3. Contact Microsoft Support 

If the issue persists after taking these steps, it appears to require a deeper investigation at the backend level. While I would love to resolve this directly, my current scope and resource limitations do not allow access to the internal systems needed for this type of troubleshooting. The best next step is to have your IT administrator submit a support ticket through the Microsoft 365 Admin Center. 

Once the ticket is created, a technical support engineer will be able to initiate a secure remote session, review backend configurations, run diagnostics, and escalate the case to specialized engineering teams if necessary. These teams are equipped to perform advanced troubleshooting and provide targeted solutions. 

As moderators, our role is to offer guidance and general troubleshooting steps. Although we do not have access to administrative tools required for backend fixes, we truly appreciate your understanding of these limitations. We hope the information provided helps point you in the right direction, and we are always here to assist as much as possible within our scope. 

For instructions on submitting a support request, please refer to: Get support - Microsoft 365 admin | Microsoft Learn. 

I hope this information is helpful. Please follow the steps above and let me know if it works for you. If not, we can continue working together to resolve the issue.   

Thank you for your patience and understanding. If you have any questions or need additional assistance, please don’t hesitate to reach out so I can continue to support you. If you found the response useful, please consider marking it as accepted, as this may help other community members who are looking for similar guidance.   

I look forward to continuing the conversation. 

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Hi @Kevin Winslow, 

Thank you for your response. I apologize for the confusion in my previous response. I misunderstood where the behavior was occurring.

Since the “Show original size” option only appears after the email is sent, this points to a rendering issue in the message view rather than anything within the compose window or something you can directly edit or remove from the signature itself.

Based on your description, this aligns with a known quirk in how Outlook processes and displays certain signature elements (especially when images and tables are involved). Even when it appears to be covering text, the control is typically being triggered by how the logo or its container is interpreted after delivery.

At this point, because the behavior is happening post-send and isn’t visible or editable during composition, there isn’t a reliable client-side action to remove that button entirely. The most appropriate 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 in the admin center, please refer to: Get support - Microsoft 365 admin.      

I hope this provides helpful information. If you have any further questions, please feel free to reach out and let me know.

If you found this answer helpful, please upvote it so that other users can also benefit from this.

Thank you for your time and patience. Wishing you a great day ahead.