KBA-01557: Chromium ClickOnce Extension

Question:

Are there any extensions recommended for Google Chrome or Microsoft Edge? How do I prevent the following message from appearing all the time:

This type of file can harm your computer. Do you want to keep sfXXXX application anyway?

Answer:

The following extensions allows Chromium Browsers to open ClickOnce .Application links.  This allows sfPMS to open native windows applications for you.

• Cegid Peoplenet ClickOnce

• Breez ClickOnce 4C

  [Note: If the extension is installed but .Application links do nothing, see KBA-01800]

When using a Chromium Browser, the login page will recommend this extension if it is not detected:

Steps for Google Chrome

1. Click the recommended link.
2. (optional) If you see a Get button, click it. This will download the file.
3. Open the exe file.
   
4. Once it is installed, you will see a confirmation message such as this:
   
5. Return to the Login Panel.  Refresh and the helper extension should be detected (meaning the recommendation will no longer be displayed).  You can log in now.

Steps for Microsoft Edge (V80 and later)

Edge goes overboard with confirmations and also has to deal with using an extension from the Chrome Extension Store.  Here are some hints.

1. When you click the link, you will be taken to the Chrome Web Store. Click the Get Extension button.
   
2. Click Add Extension to confirm.
   
3. The ClickOnce Extension Plugin installer will download.  Look for it in the Downloads Tray and click Open File.
4. Close Chrome and go back to Edge.
5. Return to the Login Panel.  Refresh and the helper extension should be detected (meaning the recommendation will no longer be displayed).  You can log in now.

Note: be sure the Windows component part of the extension gets installed!  Some sites block this accidentally.  See step 10.B.i in KBA-01800 for troubleshooting steps.

Group Policy Hints

Spitfire certainly understands that using group policy to deploy extensions make a ton of sense.  There are various “how to” references.  We have heard that this 3rd party article can be helpful.  Please use at your own risk and discretion.

 

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KBA-01557; Last updated: March 13, 2025 at 13:24 pm