How do I turn off the fault tolerant heap?

Question

I\'ve recently started seeing this line in my Visual Studio 2005 output window when launching my application:
FTH: (7156): *** Fault tolerant heap shim applied to cu

Answer 1

"Rundll32.exe fthsvc.dll,FthSysprepSpecialize" looks to only clear the list of currently flagged applications. if your application still causes oddities, the FTH should still step in and take over.

as already mentioned:

Set this registry value to 0: HKEY_LOCAL_MACHINE\Software\Microsoft\FTH\Enabled

this should disable FTH for the whole system.

Answer 2

Set this registry value to 0: HKEY_LOCAL_MACHINE\Software\Microsoft\FTH\Enabled

Answer 3

I had similar issue when running a Unit test using (Microsoft::VisualStudio::CppUnitTestFramework). Somehow I had violated some heap allocation, and next time I tried to debug I received the message : "Fault tolerant heap shim applied to current process. This is usually due to previous crashes. " and the debug environment froze.

To get it to work again, I had to remove test case, recompile and add it again and recompile, then I could set breakpoint and step into the test.

Answer 4

On Windows 10 the registry location is:

Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\FTH

You can remove you executable from the list in:

Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\FTH\State

or you can run this command from an elevated command prompt

Rundll32.exe fthsvc.dll,FthSysprepSpecialize

You may need to reboot your machine