PGP PUBLIC KEY BLOCK

How could I read a message wich is codated with Version: GnuPG v2.0.17 (MingW32) This is how the message starts.

-----BEGIN PGP PUBLIC KEY BLOCK-----
Version: GnuPG v2.0.17 (MingW32)

[crypted message]

-----END PGP PUBLIC KEY BLOCK-----

How can I read the message?

This is not an encrypted message, but somebody is sending you his public key (which you could use to send an encrypted message to him.

You could read it by importing to GnuPG. Save everything of the public key block (including the start and end lines with their dashes) into a text file, and import it from the command line:

gpg --import thefile.asc

File name and extension do not matter, .asc is best practice. Gnupg will now print what key it imported.