When troubleshooting complex issues, it is sometimes necessary for our customer service team to obtain additional information about the network requests that are generated in your browser while an issue occurs. A customer service team member may request that you record a HAR file, or a log of network requests, while that issue is occurring and then provide that to them for further analysis.
To generate the HAR file for Chrome
Open Google Chrome and go to the page where the issue is occurring.
From the panel opens at the bottom of your screen, select the Network tab.
Look for a round Record button in the upper left corner of the Network tab, and make sure it is red. If it is grey, click it once to start recording.
Check the box next to Preserve log .
Click the Clear button (round button with line going through ) to clear out any existing logs from the Network tab.
Now try to reproduce the issue that you were experiencing before, while the network requests are being recorded.
Once you have reproduced the issue, right click anywhere on the grid of network requests, select Save as HAR with Content , and save the file to your computer.
Starting with Firefox 41, HAR files can be created without any additional extension.
Start Firefox Developer Tools in Network mode (Top right menu > Developer > Network, or ctrl-shift-Q)
Reproduce the issue
Save the capture by right-clicking on the grid and choosing "Save all as HAR"
Export the capture to a HAR file
For Internet Explorer/Edge
Edge natively produces HAR files. See detailed instructions in the Microsoft site
Open the Network tool in F12 developer tools
Reproduce the issue
Export captured traffic as a HAR (CTRL + S)
For Internet Explorer, you will need to use: HttpWatch .
Download and Install HttpWatch
Start the HttpWatch capture right before reproducing the behavior you want to study
Stop the HttpWatch capture right after reproducing the behavior to study
Export the capture to HAR format