Hi Kate, Unfortunately, I've experienced the exact same manifestation of this issue on another PC whilst having no other security applications running [ie. AV/HIPS/sandbox]. Does your team member run network-capable portable apps from their encrypted partition? Do they only use TrueCrypt to encrypt their system partition? [just trying to work out what might make their circumstances different] One thing I mentioned earlier in this thread is that I was unable to add any applications to the Access:Rules section. This turns out to also be specific to applications located on encrypted partitions/containers. I can add applications located elsewhere on the machine without issue. If I try and add an application on the encrypted partition it goes through the motions of allowing me to select the .exe but then fails to actually add it to the list. I might try encrypting the system partition next and seeing if I experience the same issues.