id	summary	reporter	owner	description	type	status	component	version	resolution	keywords	cc	guest	host
16055	TLS issues in Ubuntu guest after Windows 10 anniversary update	seb1975		"I run Ubuntu 14.04 LTS in VirtualBox 5.1.6 on Windows 10. Hyper-V is disabled.

Everything has worked great until the host system was upgraded with KB3181403 (Windows 10 anniversary update).
I already tried the same VM on W8.1 and W7. It works without any issues. 
But the problem can be reproduced on other machines with W10 + KB3181403.

When accessing content via an HTTPS conncetion on W10 with KB3181403 I get the following error in my terminal now:
CODE: SELECT ALL   EXPAND VIEW
unable to access '...': gnutls_handshake() failed: A TLS packet with unexpected length was received.

It doesn't happens with curl.
I have noticed the behavior with my own service application and with apt-get update. Last one fails now for all packages with an HTTPS source.
"	defect	closed	network	VirtualBox 5.1.6	fixed	TLS, Windows10, KB3181403		Linux	Windows