Environment
- Mozilla Firefox: All Supported Versions
Objective
Capture diagnostic logs from a web browser for UI troubleshooting using Firefox
Resolution
- Press F12 to open the Debug pane.
- Navigate to the Network tab.
- Recording should start automatically or Click on the Pause/Resume Recording button to start recording.
- Reproduce the action in question.
- Right click on the recorded events > Save All as HAR
- Check for and save HTTP Error details
- For any errors observed above, note the Request URL and HTTP error number (4## or 5##)
- Select the Console tab
- Locate the error number tied to the Request URL
- Right-click matching error and click "Save As..."
- Set name of file, including at least HTTP error number, and save file to your computer
Example
Original filename: defense-prod05.conferdeploy.net-1646930859819.log
Updated filename: 400_defense-prod05.conferdeploy.net-1646930859819.log
- Attach the HAR file and HTTP Error file to the case, or use CB Vault if the file is larger than 25 MB
Additional Notes
- To stop recording click on the trashcan at the top left of the Debug pane.
- If a graph appears instead of the events click the Back button on the left side of the Debug pane.
- All credentials and session cookies within a HAR file should be removed before sharing with Carbon Black
- The HAR file is a text file, it can be opened in a text editor and searched for the SESSION cookie value and replaced with
<REDACTED> - This can also be done for passwords and API tokens if they were part of the recording
- It's also recommended to logout from the Carbon Black session after recording a HAR session. This is a precaution that should invalidate session IDs if any were missed.
- HAR Files under 25 MB can be attached directly to a Carbon Black Technical Support case.
- Files larger than 25 MB should be uploaded to CB Vault.
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