I encountered problems in IE11 in combination with HTTP2 (SCRIPT7002: XMLHttpRequest: Network Error 0x2eff, Could not complete the operation due to error 00002eff.). These seem only to occur with IE11 / Win10 and HTTP2 enabled on our Tomcat.
After researching here and trying nearly every suggestion we came to the decision to disable HTTP2. Since we want to use HTTP2 for other browsers our solution is to disable it in IE 11.
On the first system it worked on the second system IE11 is just ignoring the setting and still transferring data with HTTP2.
We tried restarting IE and restarting the system but it still uses HTTP2.
Any ideas?