Dear squid users, I apologize, if the following is a FAQ (but even after searching the squid mail archives for the last two years I haven't found any hint). In the company I work for we deploy Windows 8 with IE 10. Since then we had no problems with our squid proxy (forward) server running for years (at last on Red Hat Enterprise Server release 6.3, squid version 3.1.19 1.el6). Only in this combination (of Windows 8 and IE 10) we get an error page 500 internal server error (screenshot at <http://thomas.krickstadt.de/squid/start-page-ie-10-error-message.png>), all other combinations of Windows OS and IE versions and a direct connection to Internet do function correctly. The start URL for a fresh installed IE 10 is <http://go.microsoft.com/fwlink/p/?Linkid=255141>. Does anybody also had such an error when deploying Windows 8 and IE 10 and found out, that a change in squid configuration helps solving this problem? What else could be the problem? Thank you and kind regards, Thomas Krickstadt -- Thomas Krickstadt, Berlin, Germany, <mailto:squid@xxxxxxxxxxxxx>