Outlook Signature Disappears Daily: Troubleshooting and Solutions

Outlook Signature Disappears Daily: Troubleshooting and Solutions

Microsoft Outlook is a widely used email client that allows users to create and manage professional emails. A crucial element of professional communication is the email signature, which often includes contact information and company logos. However, many Outlook users have reported an issue where their signatures disappear every day after rebooting their computers. This article aims to explore the potential causes of this problem and provide effective solutions to resolve it.

Potential Causes

Several factors can contribute to the disappearance of Outlook signatures:
Trial Version: Using a trial version of Microsoft Outlook may cause the signature to disappear.
Version Mismatch: Incompatibility between the Outlook version and the operating system architecture can lead to signature issues.
Roaming Signatures: When enabled, the roaming signatures feature can interfere with signature settings, causing them to disappear.
Temporary Files: Corrupted temporary files in the Outlook web app can disrupt signature functionality.


To resolve the issue of disappearing Outlook signatures, several solutions can be implemented:

1. Verify Signature Settings

• Ensure that the appropriate email account is selected under “Choose default signature.”
• Select the correct signature for “New messages” and “Replies/forwards.”

2. Disable Roaming Signatures

• Open the Windows Registry Editor (regedit).
• Navigate to HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\Setup.
• Create a new DWORD (32-bit) value named DisableRoamingSignaturesTemporaryToggle.
• Set the value data to “1” and restart the computer.

3. Clear Browsing Data (OWA)

• In the Outlook web app, navigate to Settings > View all Outlook settings.
• Select Mail > Compose and reply.
• Under “Select default signatures,” choose the appropriate signatures.
• Save the changes.

4. Recreate Missing Signature

• Open Outlook desktop app and navigate to File > Options > Mail > Signatures.
• While holding Ctrl, click the “Signatures” button.
• Open the RTF or HTML file of the signature.
• Copy the signature content and create a new signature in Outlook.
• Set the new signature as the default for new messages and replies.

5. Remove Signature Cache

• Press Windows key + R, type %userprofile%\AppData\Roaming\Microsoft\Signatures, and press Enter.
• Delete all the files in the folder.

6. Create a New Outlook Profile

• Go to File > Account Settings > Manage Profiles.
• Select Show Profiles > Add.
• Create a new profile with a unique name.

7. Repair/Reinstall Outlook

• If the issue persists, repair or reinstall the Outlook app.


By implementing the solutions outlined in this article, users can effectively resolve the issue of Outlook signatures disappearing every day after rebooting their computers. These methods address various potential causes, including incorrect signature settings, roaming signatures, corrupted temporary files, and profile issues. By following these steps, users can ensure that their Outlook signatures remain intact and professional, enhancing their email communication.


Why does my Outlook signature disappear every day?

Outlook signatures can disappear due to various reasons, such as using a trial version of Outlook, version mismatch between Outlook and the operating system, enabled roaming signatures, corrupted temporary files in the Outlook web app, or a corrupted Outlook profile.

How can I fix the disappearing Outlook signature issue?

To resolve the issue, you can verify signature settings, disable roaming signatures, clear browsing data in the Outlook web app, recreate the missing signature, remove the signature cache, create a new Outlook profile, or repair/reinstall the Outlook app.

What is the purpose of disabling roaming signatures?

Disabling roaming signatures can help resolve the issue of disappearing signatures by preventing Outlook from synchronizing signatures across devices, which can sometimes cause conflicts or errors.

What is the significance of removing the signature cache?

Removing the signature cache can help resolve the issue by deleting corrupted or outdated temporary signature files that may interfere with the proper functioning of Outlook signatures.

What should I do if none of the solutions work?

If none of the provided solutions resolve the issue, you can try contacting Microsoft support for further assistance or explore alternative email clients that may not experience the same problem.

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