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Outlook protection: Known issues

Although uncommon, you may encounter one of the following issues: 

 

 


Issue with Chrome v142 and Edge v143

Chromium introduced a new security feature called Local network access restrictions. In Chrome v142 and Edge v143, this prevents the Outlook add-in from communicating with the Safetica Client running on the computer.

This issue happens because Microsoft’s Office add-in framework (OWA) is not yet compatible with this browser change. As a result, the add-in behaves as if the Safetica Client is not installed.

Who is affected:

  • Users who use Outlook on the web (OWA) in:
    • Chrome v142
    • Edge v143

Impact:

  • Reduced protection: The add-in cannot connect to the Safetica Client and starts providing only limited protection (e.g., no content analysis for attachments).

 

Solution:

Option 1: Avoid OWA in affected browsers

Use on of the following:

  • Desktop Outlook or
  • Classic Outlook or
  • OWA in a different browser or version (not Chrome v142 / Edge v143).

Option 2: Temporarily disable the Chromium feature

If users must use OWA in Chrome v142 / Edge v143, you can temporarily opt out of the Local network access restrictions via enterprise policy:

Option 3: Disable Chromium feature manually

Individual users can disable the restriction in Chrome flags:

  • chrome://flags/#local-network-access-check

 

 


Outlook add-in is unavailable

Appears relatively rarely and is probably connected to:

  • using the add-in for the first time in a browser
  • using the add-in for the first time after a browser update

Solution: Click Send anyway.

The email will only be recorded if you have Exchange protection activated.

For emails that should be blocked there is no Send anyway button 

 

 


Outlook add-in finished processing

May rarely appear when processing takes longer than 5 seconds. Usually connected to sending larger attachments or temporary issue in the network.

Solution: Click Send.

The email may not be recorded.

For emails that should be blocked, there is no Send button.

 

 


Outlook add-in processes the message longer than expected

Rarely, the add-in may stop responding when sending an email. You will see the notification: “Email protection for Safetica is processing message” which may remain displayed for several minutes.Solution:

  • Click the Don’t send button and try sending the email again.
  • You can also click Send anyway (if available).
  • Check your internet connection, as poor connectivity may contribute to this issue. 
  • If the above points do not solve the issue, try waiting until the the message changes to timeout and click Send anyway.