I apologize for bumping a 2 month old thread, but I have this exact problem. I had actually experienced it probably about a year ago, but I had simply disabled Defense+. I recently reinstalled Windows and experienced the same problem before remembering to disable Defense+ again.
[Edit: I should mention that I’m using Windows 7 Ultimate (64-bit).]
As with madonnamustache, my system is 100% unresponsive. I can’t Alt+Tab, Win+D, or Ctrl+Alt+Del. I’ve also noticed that hard drive and network activity essentially stops.
One interesting thing, though, is that it’s not a “permanent” freeze. If I wait (sometimes as long as 8 minutes, but usually not less than 5) the system will recover and continue loading the game.
Also, if I have a system monitoring application running at the time, it will have absolutely no record of activity during the time my system is locked up. And I don’t mean that graphs will show zero activity for that period of time; I mean the graph will simply jump from the time the freeze began to the time it ended, with nothing in between. It will jump from, say, 1:00:00 PM to 1:05:00 PM.
I suspect it has something to do with switching video modes/resolution as changing resolution in one of my games will trigger the freeze, as will Alt-Tab’ing out of the game (once it’s running). If it’s video-related, it may be useful to know that I have an NVIDIA graphics card with the 310.90 release of their drivers. When I experienced this issue earlier, I was, of course, using an earlier version of their drivers.
According to the Defense+ Events log, I think I can narrow it down to this activity:
- Access Memory: C:\Windows\System32\csrss.exe
I haven’t done any thorough testing, but I believe that adding this to the custom policy for the game has eliminated the problem.
Creating a Predefined Policy may be more convenient than adding the above to the policy of each game, though.