Mozilla Firefox enables you to adjust the timeout configuration when you access the about:config screen. The about:config screen includes a long list of preferences with defined behaviors and values. The advanced preferences editor enables you to modify the values to update a behavior. For example, edit the timeout value for the proxy server connection to extend the time limit for a connection between your PC and the server.

Step 1

Enter "about:config" (without quotation marks) in the Firefox Location bar, and then press "Enter." The screen message states, "This might void your warranty."

Step 2

Click the "I’ll be careful, I promise!" button to open the list with four columns: Preference Name, Status, Type and Value.

Step 3

Enter "timeout" in the Search bar, and then press "Enter" to filter the Preference Name configuration options that contain "timeout."

Step 4

Double-click "network.proxy.failover_timeout" to open the Enter Integer Value pop-up window. The current value displays in the field.

Step 5

Enter a larger value to replace the current value and then click "OK" to save. Close your Firefox browser and then launch Firefox again.