Fixed: Download interrupted when downloading large files from Sharepoint on Office365

I was trying to pull some training videos off of our corporate Sharepoint site today and kept getting "Download Interrupted" errors.  That's annoying.  I popped open Wireshark and found thousands of TCP ACK retransmits.  There were no ICMP messages indicating connection trouble, so it was rather odd.

I found a solution on the Office365 Community forums; disable TCP Window Autotuning.

The command to do this (from an elevated command prompt) is
netsh int tcp set global autotuninglevel=disabled

No reboot is required.

Thanks Internet!