HAR (HTTP Archive) files capture various browser issues such as unsuccessful logins and webpage rendering issues. These log files are commonly used by Cisco Technical Support for troubleshooting purposes. Follow the steps below to capture a HAR file for your specific browser.

• Chrome/Edge
• Firefox
• Safari

To generate a HAR file in Google Chrome and Microsoft Edge (Chromium Based)

1. Open Google Chrome and go to the page on which you are experiencing the issue.
2. From the Chrome menu bar, select More tools > Developer Tools.
3. From the opened panel, select the Network tab.

4. Check the box next to the Preserve Log.

5. Look for a round record button in the upper left corner of the tab, and make sure it's red. If it is grey, click on it to start the Network recording log (Ctrl+E).
6. Click the Clear button to clear out any existing logs from the Network tab.
7. Reproduce the issue that you were experiencing, under the Name column right-click on any network request within the grid, and select Save all as HAR with Content.
8. Select Desktop, then click the Save button.

To generate a HAR file in Mozilla Firefox

1. Open Firefox and go to the page on which you are experiencing the issue.
2. Select the Firefox menu at the top-right of your browser window, then select More Tools > Web Developer Tools
3. The Developer Network Tools opens as a panel at the side or bottom of Firefox. Click the Network tab.

4. Check the Persist Logs box by clicking the gear icon in the top right corner.

5. Reproduce the activity that was causing the issue in the browser, then right-click anywhere within the grid of network requests, and select Save All As HAR.
6. Right-click on any network request within the grid, select Save all as HAR with Content,
7. Select Desktop, then click the Save button.

To generate a HAR file in Apple Safari

1. Click on the Develop drop-down menu, and then select Show Web Inspector.
   • If you don’t see the Develop drop-down menu in the menu bar, choose Safari > Preferences, click Advanced, then select the Show Develop menu in menu bar.
2. Check the box next to the Preserve Log.
3. Click the Network tab and reproduce the activity that is causing issues.
4. Click the export  icon, and then save the web archive file to your desktop.