Rocket League Error: 67

[TheMstwntdLMSV]

I have recently installed the Windows 10 Anniversary update (hoping all the bugs would be sorted out by now after 2 months) and found that I cannot complete matchmaking in Rocket League. I don't know if this has anything to do with the update. I have had problems when I tried to install the update when it first came out, and I had to revert because the update screwed up my antivirus and did not allow me to log into YouTube (that problem still persists). Does anybody have any idea how they could help me? I have tried almost all the solutions on the Rocket League support page as well as many other suggestions by other people. The only one that I was not able to complete was port forwarding because I am not able to access my router settings at the moment.

[1Reshiram12]

I haven't had that issue after the update, so I don't know what to tell you besides I don't think it's a OS issue.