I just downloaded and ran the new version of TCPView 4.0 from the Sysinternals website.
I am getting an application hang/crash with the x64 version on my machine, using Windows 7 x64 SP1.
The 32-bit version seems to work OK.
Faulting application name: tcpview64.exe, version: 126.96.36.199, time stamp: 0x605a3734
Faulting module name: tcpview64.exe, version: 188.8.131.52, time stamp: 0x605a3734
Exception code: 0xc000041d
Fault offset: 0x00000000000533f0
Faulting process id: 0xe7c
Faulting application start time: 0x01d721dc752a0202
Faulting application path: C:\Program Files\TCPView\tcpview64.exe
Faulting module path: C:\Program Files\TCPView\tcpview64.exe
Report Id: cef0bbd5-8dcf-11eb-8302-a85e45e3d42c