Gpg4win is a powerful software developed by the Gpg4win project that offers users an easy-to-use encryption toolset for Windows 7. With Gpg4win, you can encrypt and sign your data and communications to safeguard your privacy and security. It provides a comprehensive security solution that includes GnuPG, Kleopatra, GpgOL, and GpgEX. Get the Gpg4win software today and experience secure email communication and file sharing.

The Gpg4win initiative aims to provide a current Gpg4win Windows installation package including the GnuPG encryption tool and associated applications. The documentation ("Gpg4win Compendium" and "Novices") is directly maintained as part of the Gpg4win project.

Another goal is to support both relevant cryptographic standards, OpenPGP and S/MIME in a unified way.

Gpg4win is an international effort. Due to the origin of the project and many members, there is a full German translation. Additional translators are welcome!

The main difference compared to all similar approaches (mainly GnuPP, GnuPT, Windows Privacy Tools and GnuPG-Basics) is that the first piece developed was the Gpg4win-Builder. This builder allows to easily create new gpg4win.exe installers with updated components. It runs best on a GNU/Linux system. Almost all products are even automatically cross-compiled for integration into the installer.

This concept raises hope to practically prevent quick aging of the installer package because updating is easier and does not depend on a single person.

Gpg4win is an installer package for Windows (2000/XP/2003/Vista) with computer programs and handbooks for email and file encryption. Both relevant cryptography standards are supported, OpenPGP and S/MIME. Gpg4win and the software included with Gpg4win are Free Software (among other things free of charge for all commercial and non-commercial purposes).

You can choose all or some of the following modules during installation:
GnuPG: The core; this is the actual encryption tool.
Kleopatra: A certificate manager for OpenPGP and X.509 (S/MIME) and common crypto dialogs.
GPA: Another certificate manager for OpenPGP and X.509 (S/MIME).
GpgOL: A plugin for Microsoft Outlook 2003 and 2007 (email encryption).
GpgEX: A plugin for Microsoft Explorer (file encryption).
Claws Mail: A complete email program including the plugin for GnuPG.
Gpg4win Compendium: The new (German!) documentation about Gpg4win2 (translation already scheduled).
Gpg4win for Novices: The old English handbook about Gpg4win1 (for newbies).

Gpg4win can be installed and tested with just a few mouse clicks. Of course you should be administrator of your system or have administration rights.

The best point to start is with the illustrative handbook Gpg4win for Novices.

We recommend subscribing to the Gpg4win announcement mailing list to be automatically informed about new releases and other important Gpg4win news.

New Release
Notes to Admins:
An update to this version is recommended due to the following security fixes:
A security bug in GpgOL has been fixed which could result in no warning shown to the user when a signed mail contained a not signed attachment after a signed one. (T8110)
The libpng component has been updated to version 1.6.55 to fix a security issue (CVE-2026-25646). This is only exploitable in our software if a mail is opened via Kleopatra.
Changes:
GUI (Kleopatra):
Kleopatra in Gpg4win and GnuPG Desktop uses now a blue icon (T8083)
New Registry key to allow saving CSR as PEM (T8115)
Removed "Forced Decryption" button in notepad (T8124)
Omit question about own key when importing a secret team key (T8098)
Add expired/revoked information to ldap search results (T8042)
Extract single folder archive without creating subfolder (T8022)
New filter for valid certificates (T7950)
Make the initial status of the check boxes of the sign/encrypt dialog configurable (T7831)
Add config option to only allow upload of own certificates to LDAP (T7772)
Changed dialog on import of secret key (T7637, T7502)
Improvement of clipboard actions (T7455)
Improved lookup of gpgconf executable (T8082)
Improvements for "Save Secret Team Key" (T8027, T8030)
Fix order of filters in settings dialog (T8079)
Formatting of QES signatures is no longer bold font (T8077)
Re-added support for config options RSAKeySizes and PGPKeyType (T8056)
Fix tab navigation in smart card table (T8051)
Some improvement in representation of signature verification (T8035)
Notepad now hides "signed" text if the signature is bad (T8020)
Make filesystem watcher notice new trustdb (T8015)
Fix handling of unset keyserver in configuration dialog (T8014)
Fix tab order in notepad (T8125, T7784)
Completed accessibility improvements of table column headings (T6568)
Don't show duplicate ldapservers in Kleopatra configuration (T7828)
Outlook Classic Add-In (GgpOL):
Make sure to check all attachments. (T8110)
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[ Gpg4win release history ]

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