If your domain name has been successfully submitted to the white list, but the filing prompt page still pops up occasionally during the visit, it may be caused by some security software modifying the system transmission parameters in order to achieve certain software functions.

Solution 1: Find the following registry locations

 HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\EnablePMTUDiscovery

If the transmission parameters have not been modified, the above key values do not exist.

If the transmission parameter has been modified, the key value exists and may be 0. At this time, it needs to be modified to 1 to restart the system.

Solution 2: Download the detection tool, detect and modify it.

Download link

As shown in the figure below Path MTU Discovery Modify to Default or Yes ， TCP Receive Windows Leave blank, other values remain default

Restart the system