Access violation in spamd.exe

Question / Problem

I get an error message of an access violation in spamd.exe and then SpamAssassin sometimes is not available any longer. How do I get rid of this?

Answer / Solution

This error message only occurs when a "real" JIT debugger like "vsjitdebugger.exe" from Visual Studio is installed.
It is never recommended to have such a JIT debugger running on a productive system!
The JIT debugger will attach to any process causing an unhandled exception and ask for debugging. So spamd.exe will be paused/blocked.
The error itself occurs deep inside of SpamAssassin and can't be avoided because of the port of SpamAssassin from Linux/Unix to windows.
The error does not influence SpamAssassin scans at all. So please de-register any JIT debugger from your system or exclude spamd.exe if possible.
For de-registering you need to clear the following registry entry:
       [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\AeDebug]       "Debugger"=""
on x64bit systems additionally:
       [HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\AeDebug]       "Debugger"=""