Internet Explorer uses Connection Keep Alive timeout headers to establish a persistent HTTP connection with a Web server, and reuses the same TCP/IP socket that was used to receive the initial request for a period of up to 1 minute by default. If the socket remains idle for 1 minute, IE resets the connection.
Change Keep Alive Timeout
If you wish, you can change this HTTP KeepAliveTimeout value, to say 2 minutes. This can be useful if the Web Server has a 2 minute time out value.
But if the Web Server has a 1 minute timeout, then changing this value will not make a difference, as the lower of the two values – Browser timeout and Server timeout, is always considered.
Create system restore point first and then Run regedit to open the Registry Editor. Now navigate to the following key:
Right-click on InternetSettings > New > DWORD.
Name the new DWORD in the right pane as KeepAliveTimeout, and give it a value 120000 in Decimal.
Exit the Registry Editor and restart Internet Explorer.
The 120000 value is 2 minutes in milliseconds.
To restore the value back to its default, delete KeepAliveTimeout or change its value to 60000.
If you wish to keep a time out or 3 minutes you will have to do the following – Give KeepAliveTimeout a value of 180000 AND create and give DWORD ServerInfoTimeout a value of 180000.