Some thoughts about a thread from may: Stunnel works ok under Windows7 64bit.

But:

There are some windows7-specific security restraints one should be aware of:

Windows7 does not allow programs to have write-access to c:\program files and c:\program files (x86) (win7 64bit).

You can find the logfile in hidden directory  c:\users\Youruser\appdata\local\virtualstore\program files\stunnel\stunnel.log 

 ( Youruser is the windows user which started stunnel )

If you want a common logfile for all users,  either  you install stunnel in another writeable directory (security risk ?)

or if installing in program files change your stunnel.conf file to have the log file in a writeable directory e.g. c:\temp

or the standard common data directory c:\programData (also a hidden directory )

I use stunnel as a service and defined “output   = c:\programData\stunnel\stunnel.log”

stunnel writes there and only users with admin access could change the logfile.

Dietmar Hacker