Browser Automation Agent Installed but getting "Browser Extension not detected" error

[nirmishra]

Hi,

We are currently on BluePrism 6.10.4 version, recently the existing extension(Manifest v2) got disabled as it is no longer supported.

As a fix we installed Browser Automation Agent which added a new extension in Chrome as mentioned in the documentation.

The issue which we are now facing is that "when launching and running something on Chrome the flow breaks with error message Browser Extension not detected". 

How should we proceed now?

#browserAutomationAgent #browserExtensionNotDetected #ManifestV2ExtensionScopeEnd

[Tejaskumar_Darji]

Hello,

You can go to Blue Prism installed programs and change it, then reinstall the extension using the BP installer. You might have installed an incorrect version so you are unable to recognise it. Use the native BP installer to get the proper extension.

Let us know how it goes.

[nirmishra]

Hi Tejas,

The issue was resolved after adding the correct configuration in Native Messaging Allowlist for Chrome policies.

Everything is working as per the expectations now.

[Tejaskumar_Darji]

Oh ok. Could you please write down the steps if possible and add few snapshots. This would help others who face the similar issue in future. Thank you.

[nirmishra]

add “com.blueprism.browser_agent” to the allowlist policy 

Google Chrome

1. Open Group Policy Editor (gpedit.msc)
2. Navigate to:
   Computer Configuration > Administrative Templates > Google > Google Chrome > Extensions
3. Find and enable:
   Native Messaging allow list
4. Add the name(s) of the native messaging host(s) you want to allow (e.g., com.blueprism.nativemessaginghost).

Microsoft Edge

1. Open Group Policy Editor
2. Navigate to:
   Computer Configuration > Administrative Templates > Microsoft Edge > Extensions
3. Find and enable:
   Native Messaging allow list
4. Add the host name(s) as above

Once it is configured we can find and validate from NativeMessageAllowlist under Chrome://Policy

[Tejaskumar_Darji]

Thank you so much for adding detailed steps, this definitely helps community readers 🙂