After logging in to RouterOS v6.37.1 in IE 11, instead of the usual WebFig UI, it just shows a grey page and the IE process becomes unresponsive (as does my PC until i close the IE tab).
Clearing browser cache doesn’t help.
It works fine on chrome.
Have you tried another PC?
I just tested with IE11 and also the newer Microsoft Edge. It works fine for both. Did you try Edge?
In my experience (I exclusively use WebFig) it is better to use a browser like Firefox or Chrome instead of IE.
With IE the load times of pages with long lists on them are very slow, and I also have occasional difficulty
when setting things up (e.g. a field with ipaddress/bits is rejected as having invalid netmask).
This is however with IE 10, I did not try IE 11.
Also, it is a good idea to use a newer browser.
IE10 → IE11 → EDGE
Sure, but Microsoft has decided that each newer version is only available on a newer OS.
With Firefox and Chrome, that problem does not exist that much.