Who is this article for?

  Users who encounter an error when using ClickOnce in Edge.

  IT Administrator permissions are required to resolve the issue.

If you click a ClickOnce link in Microsoft Edge and the application does not launch, ClickOnce has been disabled in your Edge installation. This article explains what to look for and how to resolve it.

Issue

ClickOnce support in Edge can be turned off either by a browser configuration setting or by a Group Policy applied by your IT department. When it is disabled, Edge does not hand off ClickOnce links to the ClickOnce installer. Instead, it downloads the application manifest file as an ordinary file, and the launch fails.

Recognising the problem

When you click a ClickOnce link in Edge and ClickOnce is disabled, you will see the following behaviour:

• Vision.application appears as a downloaded file at the foot of the screen.
• If you click Open file, you see the error:

Application cannot be started. Contact the application vendor

• If you click Details, the text includes:

+ Deployment and application do not have matching security zones.

Solution

If ClickOnce has been disabled via a Group Policy, you will not be able to re-enable it yourself — contact your IT department.

If it has been disabled in the browser settings, you can re-enable it as follows:

1. In the Edge address bar, type:

edge://flags#edge-click-once

1. In the dropdown next to the ClickOnce setting, select Enabled.
2. Click the Restart button that appears at the bottom of the window.
3. Once Edge has restarted, ClickOnce should function normally.