Trying to start the Tor Browser on Win7 x64 SP1 with MS EMET 5.1 installed and firefox.exe added to it leads to the following crash of firefox.exe: EMET detected SimExecFlow mitigation and will close the application: firefox.exe SimExecFlow check failed: Application : D:\Tor Browser\Browser\firefox.exe User Name : XYZ\XYZ Session ID : 1 PID : 0x1280 (4736) TID : 0x12C8 (4808) CodeAddress : 0x62B5EEF2 CodeStackPtr : 0x3CF190 CalledAddress : 0x77324AFF API name : kernel32.VirtualProtectEx StackPtr : 0x003CF130 FramePtr : 0x763298 IMHO it should be possible or even best practise to use Tor Browser together with EMET. Perhas a core developer can take a look at this. If you need more information, let me know. **Trac**: **Username**: Diapolo