When I am trying to open a office.com in any browser of some systems it is showing blank white screen

When I am trying to open office.com in any browser of some systems it is showing blank white screen and but in some systems it is opening properly.

When I checked developer tools I found that serviceworker is not receiving for the office.com page in the systems where office.com page showing blank white screen.

For the systems in which it is opening properly serviceworker is working fine. All the systems gets internet through proxy.

Please help me in configuring serviceworker in the systems where it is not opening.