How to Capture HAR Files in Browsers

A HAR file, or HTTP Archive file, records the network activity in your browser while you reproduce an issue. Modern Campus Support may request a HAR file when troubleshooting problems such as failed logins, broken pages, missing content, or form submission errors.

Before You BeginLink to this section

Close any unrelated browser tabs or windows. Be aware that HAR files can capture page requests, headers, and other browser activity from your session.

Follow the steps below, then reproduce the issue exactly as it occurs.

Google Chrome and Microsoft EdgeLink to this section

1. Open the browser and go to the page where the issue occurs.
2. Right-click anywhere on the page and select Inspect.
   • You can also press F12.
3. In the developer tools panel, select the Network tab.
4. Click Record in the top-left corner of the Network tab.
5. Check the Preserve Log box so the data is not lost if the page reloads or redirects.
6. Click Clear to remove any existing network activity.
7. Reproduce the issue in the browser.
8. In the list of network requests, right-click and select Save All as HAR with Content.
   • In some versions, you can also click the download icon in the toolbar.
9. Save the HAR file to your computer.

Mozilla FirefoxLink to this section

1. Open Firefox and go to the page where the issue occurs.
2. Open developer tools:
   • On Windows, press Ctrl + Shift + E.
   • On Mac, press Cmd + Option + E.
3. Select the Network tab.
4. Click the gear icon and enable Persist Logs.
5. Reproduce the issue in the browser.
6. Right-click anywhere in the network request list and select Save All As HAR.
7. Save the file to your computer.

Apple SafariLink to this section

1. Open Safari.
2. If the Develop menu is not already enabled:
   • Go to Safari > Settings or Safari > Preferences.
3. Select the Advanced tab.
4. Enable Show Develop Menu in menu bar.
5. Go to the page where the issue occurs.
6. Select Develop > Show Web Inspector.
7. Click the Network tab.
8. Enable Preserve Log.
9. Reload the page if needed, then reproduce the issue.
10. Click the Export or download icon to save the HAR file.
11. Save the file to your computer.

Send the HAR File to SupportLink to this section

After saving the file, attach it to your support case or send it to the Modern Campus Support team using the method provided in your ticket.