e2e_appmon - NimRecorder extension for Google Chrome and Firefox

Products

• DX Unified Infrastructure Management (Nimsoft / UIM)
• Unified Infrastructure Management for Mainframe
• CA Unified Infrastructure Management SaaS (Nimsoft / UIM)

Issue/Introduction

This KB Article explains the procedure to load the NimRecorder extension on Chrome and Firefox and includes troubleshooting the error-> Uncheck runtime.lastError: Access to the specified native messaging host is forbidden

This technical document discusses the following e2e topics:

1) NimRecorder extensions for Google Chrome and Mozilla Firefox

2) The procedure to load NimRecorder extension on Google Chrome

3) Troubleshooting the below error after loading NimRecorder extension on Google Chrome :

Uncheck runtime.lastError: Access to the specified native messaging host is forbidden

Environment

- e2e_appmon v2.52

- e2e_appmon_dev v2.52

- Windows-Only

- Operating System installed in C:\ Drive

- Nimsoft installed in the default C:\Program Files(x86)\Nimsoft location

 

Resolution

1) The nimrecorder plugins for Google Chrome and Mozilla Firefox have been attached to this KB Article.

2) Procedure to load NimRecorder Extension on Google Chrome:

Pre-requisites:

The robot should have:

• e2e_appmon probe deployed
• Google Chrome of Firefox browser installed

 

Steps:

1. Download and extract nsChromeExt extension attached to this document on the e2e robot

2. Launch the Google Chrome browser, type in the address bar:

chrome://extensions/

Please refer to the screenshot below:

 

3. At the top right, click to enable the Developer mode (F12) and click Load unpacked as shown in the screenshot below:

 

4. Go to the location where you have extracted the nsChromeExt extension (in Step 1), then click on Select Folder as shown below:

 

5. Once the extension is loaded, you will see the Errors button, this is expected as seen in the below screenshot:

 

6. Click on the Errors button. You will see the error message:

Unchecked runtime.lastError: Access to the specified native messaging host is forbidden.

 

 

3) Troubleshooting the error: Uncheck runtime.lastError: Access to the specified native messaging host is forbidden

 

1. Type in the Google Chrome browser address bar:

chrome://extensions/

2. Click on Details button in the NimRecorder extension as shown in the below screenshot:

 

3. Select and copy the ID as shown in the below screenshot:

 

4. Open Notepad as administrator:

                                                                                                       

5. From Notepad, follow the steps below:

• • click on File -> Open:

• • select the path: C:\ProgramData\NimRecorder

• • Set File Type to 'All Files':

• • Select the file ChromeMsgrHostManifest and click on Open:

 

6. Select the ID and replace it with the Extension ID copied in Step 3 as shown in below screenshots 5(a), 5(b) and 5(c):

 

 

7. Now, save it and exit from Notepad:

 

 

8. Close and launch the Google browser -> go to chrome://extensions and verify the Errors button is gone:

9. Optionally, you can now Disable the Developer mode option:

Additional Information

For troubleshooting issues/queries, email wintask support at:

[email protected]

 

For further reading:

e2e_appmon (E2E Application Response Monitoring) (broadcom.com)