(Originally posted in the MS Community, was asked to post here)
I run a website that servers both uncompressed javascript and javascript I have pre-compressed with gzip. All has been working for multiple years.
Over the last few weeks I have reports of failures until Win7 with IE11. Running my site with developer tools in IE11, I see a SCRIPT1014 invalid character error on the gzip'd javascript. And if I view the script in the network
tab -> Response Body I see the compressed data.
Some searches lead me to KB2976627. Uninstalling that update, reboot, and reload on IE11. Now the script loads fine and looking at Response Body shows the uncompressed data. Re-installing the update breaks the site again.
Thoughts?