This is a confirmation of bug 1516, gpgex also crashes Explorer in version 2.2.0
on my Windows 7 64bit PC.
I have managed to get it to work with an older version of gpg4win and gpgex on a
different server after regsvr32'ing the beta version of gpgex but on my system
gpgex on the 2.2.0 release doesn't appear to work properly.
I've done more testing, If the gnupg folder is not moved from its default
location gpgex.dll works in v 2.2.0.
The gpgex.dll problem occurs in version 2.2.0 when the user's GNUPGHOME
environment variable has been set to a non-default location (not the user's
default \AppData\Roaming\gnupg)
Kleopatra works fine but for some reason gpgex doesn't work. It produces an
error "Cannot connect to the GnuPG interface (Kleopatra): IPC Connect call failed"