Iframe not displayed

if you include this page in https it fails – see:
https://exam.vbspu.ac.in/nresult/EvenSemesterResult2017_2018/Index?eid=23

but your page is https – means you only can insert https pages.

So you need to ask exam.vbspu.ac.in that they offer their page in https.

Best, Michael

then how this website doing https://files.nvshq.org/rdvv-results-2019/
non https page link – https://www.rdujabalpur.net/rduoptn6.php

• This reply was modified 4 years, 9 months ago by mdbadshahansari.

There they use
//www.rdujabalpur.net/rduoptn6.php

This means protocol the of the parent is used. = https!

and https://www.rdujabalpur.net/rduoptn6.php works fine :).

Best, Michael