Microsoft Outlook Cannot Sign or Encrypt This Message [Error Fix]

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Updated onJuly 19, 2024

updated onJuly 19, 2024

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Did you see an error stating “Microsoft Outlook cannot sign or encrypt this message”? Outlook offers strong security features to protect your emails, including the ability to sign and encrypt messages. The error message indicates a problem with your email security settings.

This action requires specific configurations and valid digital certificates. So, you’ll get this error if any of these elements are missing or incorrectly set up.

Luckily, I’ve got just the solution for it. Read on to find out!

How To Fix “Microsoft Outlook Cannot Sign or Encrypt This Message”

Follow these instructions:

Modify E-mail Security Settings

To adjust your e-mail security settings, do this:

Fix Invalid Certificate

Another issue could be that you’re using an invalid certificate. Here’s how to fix it:

Update Outlook

The issue could also stem from an outdated Outlook. Follow the below steps to update it:

Overall, the “Microsoft Outlook cannot sign or encrypt this message” error can be frustrating, but it’s easy to resolve with the right steps. Ensure you have a valid digital certificate, modify your e-mail security settings, and update Outlook.

Another similar error includes theMicrosoft Outlook was not able to create a message with restricted permissionproblem but we’ve already discussed how to resolve it. You may also experienceApp Access Blocked on Outlook.

Moreover, if you’re encountering an error related toWAB.dll,Google Workspace sync, theAutoArchive settings are greyed out, or you want tochange where sent items go, we’ve got just the guides for that.

Which solution has worked for you?

Microsoft Outlook Cannot Sign or Encrypt This Message [Error Fix]#

How To Fix “Microsoft Outlook Cannot Sign or Encrypt This Message”#

Modify E-mail Security Settings#

Fix Invalid Certificate#

Update Outlook#

Microsoft Outlook Cannot Sign or Encrypt This Message [Error Fix]

How To Fix “Microsoft Outlook Cannot Sign or Encrypt This Message”

Modify E-mail Security Settings

Fix Invalid Certificate

Update Outlook