GnuPG for Windows - Version 5.0.0

Gpg4win 5.0.0

Gpg4win version 5.0.0 is available since 2026-01-14. This is a major release with many new features and improvements:

Notes to Users

An update to this version is strongly recommended due to a couple of security fixes and to address the close end-of-life of some components:

  • The GnuPG component fixes a minor security issue related to third-party key signatures (T7904) and a minor memory access violation (T7904).
  • The Okular component has been improved and updated with security fixes for its Poppler backend.

New Features

GUI

Upgrade to Qt 6.10.1 and KDE Frameworks 6.20. This upgrade from Qt 5 brings many improvements, including better dark mode support.

GUI (Kleopatra)

  • Move Qt configuration files to new locations. (T6799,T7575,T7700,T7717)
  • Use Breeze style icons on Windows. (T7415)
  • Reorder menu items. (T7579)
  • Reduce the number of actions in the context menus. (T7515,T7231)
  • Support Kyber (FIPS-203) key generation. (T7397)
  • Improved support for V5 fingerprints. (T7297)
  • Format fingerprints everywhere. (T7707)
  • Sign/encrypt window improvements. (T7556)
  • Change logic for option to always show the result window. (T7553)
  • Check box "Encrypt to Others" is functional now. (T6485)
  • Improved verification results messages. (T6869)
  • Notepad:
    • Opens now in separate window. (T7361)
    • Recipient information are now on the side of the input field. (T5957)
    • Buttons are now below the input field. (T7760)
    • Improved notepad result messages. (T7341)
    • Close message notification on revert. (T7762)
  • Remove imported certificates tabs. (T7630)
  • Show certificate's comment field in certification dialog. (T7558)
  • Show more information for publish on keyserver in certifications dialog. (T6663)
  • Add option to hide 3rd party certifications in dialog. (T6627)
  • Add pinentry counters to smart card management view. (T6787)
  • Look up missing OpenPGP certificates for card keys. (T7272)
  • Do ask for confirmation only twice when deleting a secret key. (T7538)
  • Show designated revoker in details window. (T7095)
  • Add audit log link for missing subkey error. (T7886)
  • Use filter in certificate selection for encryption. (T7236)
  • Display the same tooltip for keys in different fields. (T7473)
  • Display keys in the same way in different contexts. (T7474)
  • For update via WKD show if the certificate was unchanged. (T7513)
  • Show progress window when updating a certificate. (T7655)
  • Add search function to configuration overview. (T7552)
  • Restore last window location on next start. (T7554)
  • Add a dialog window to the disable/enable certificate action. (T7580)
  • Update custom colored UI elements when colors change. (T7610)
  • Add option to start Kleopatra as additional process. (T7704)
  • Remember last used file system locations when saving or opening files. (T7802)
  • Improved success message on keyserver upload. (T7495)
  • Improved crypto operations on clipboard. (T7455)
  • Improved UX of subkey expiry change window. (T7215)
  • Improved "About data". (T7329)
  • Accessibility improvements:

GUI (Okular/GnuPG-edition)

  • OpenPGP signature support.
  • Improved signature workflow.
  • Improved visual representation of signatures.
  • Improved zoom.
  • QES certificates are marked as such (if they are properly configured in the backend).

Outlook-New Add-In (GpgOL/Web)

Introduction of the new GpgOL/Web add-in, still EXPERIMENTAL.

It was designed and implemented from scratch to support the new, web-based Outlook. This add-in uses a locally running service to fetch and send encrypted messages from/to Outlook. I.e. unencrypted content does not leave the local operating system and is not synced to the cloud.

This add-in is still in development and missing features. Currently only standard Microsoft-365 accounts are supported.

Engine (GnuPG)

  • gpg: Support for composite Kyber+ECC public key algorithms according to the FIPS-203 and the LibrePGP specifications. (T6815)
  • gpg: New commands --add-recipients and --change-recipients. (T1825)
  • gpg: New command --quick-tsign-key to create a trust signature. (rGd90b290f97)
  • gpg: New options --[no-]auto-key-upload. (T7333)
  • gpg: New option --show-only-session-key. (rG1695cf267e)
  • gpg: New option –proc-all-sigs. (T7261)
  • gpg: New option --disable-pqc-encryption. (rG00c31f8b04)
  • gpg: New list option "show-trustsig" to be used in with-colons listings. (rG41d6ae8f41)
  • gpg: New import option "force-update". (T7892,rGf6237ccd31)
  • gpg: Try to retrieve a key from LDAP before sending it. This can be disabled using keyserver-options no-update-before-send (T7730)
  • gpg: Do not present a default when asking for another output filename. (T7908)
  • gpg: Include ADSK keys in key listings specified by fingerprints. (T7892)
  • gpg: New "pfc" record for key preferences in with-colons key listings. (T7897)
  • gpg: Keys send to an LDAP server are now first updated from that server. New keyserver option "no-update-before-send" to disable this feature. (T7730)
  • gpg: Add a notation with version information to signatures. See doc/DETAILS for, well, details. (rG11d3a83b04)
  • gpg: Show revocation reason with a standard key listing. Emit a revocation reason as comment in a "pub" record. (T7083)
  • gpg: Add a flag to the filter expressions for left anchored substring match. (rGc12b7d047e)
  • gpg: Emit status error for an invalid ADSK. (T7322)
  • gpg: New keygen parameter "User-Id". (rGcfd597c603)
  • gpgv: New option --print-notation. (rGe3cc410003)
  • gpgsm: Nearly fourfold speedup of validated certificate listings. (T7308)
  • gpgsm: New option –assert-signer. (T7286)
  • gpgsm: Add option --no-qes-note and new trustlist flag "noconsent". (T7713)
  • gpgsm: Extend --learn-card by an optional s/n argument. (T7379)
  • gpgsm: Allow unattended PKCS#12 export without passphrase. (rG159e801043)
  • gpgsm: Allow CSR generation with an unprotected key. (rG89055f24f4)
  • agent: New option --change-std-env-name. (T7522)
  • agent: Allow OpenSSH to sign data larger than the Assuan line length. (T7436)
  • scdaemon: Make newer TCOS signature cards work. (rG17596e830f)
  • scdaemon: Make signing work with Nexus cards. (rGe1576eee04)
  • scdaemon: Support Yubikey attestation generation for the OpenPGP app. (rG5ddfedf24a)
  • dirmngr: Implement command KS_DEL to delete keys from an LDAP keyserver. (T5447)
  • dirmngr: Support Unix LDAP servers using a schema similar to the one used on Windows LDS servers. (T7742)
  • dirmngr: New LDAP keyserver flag "upload". (T7866)
  • dirmngr: New option --user-agent and use "GnuPG/2.6" as default User-Agent header of for all HTTP requests. (T7715)
  • dirmngr: A list of used URLs for loaded CRLs is printed first in the output of the LISTCRL command. (T7337)
  • gpg-wks-server: Support templates for mail content. (T7381)
  • gpg-card:: New command "ll" as an alias for "list –cards". (rGd6ee7adebe)
  • gpg-mail-tube: Support templates for mail content. (T7381)
  • gpg-mail-tube: Make sure GNUPGHOME is set in vsd mode. New option --as-attach. (rG4511997e9e1b)
  • Add GNUPG_ASSUME_COMPLIANCE environment variable and a registry key for testing de-vs compliance mode. [rGb287fb5775,rG7b0be541a9]

Solved Bugs

GUI (Kleopatra)

  • Fix for issues with delayed or failing initial keylistings. (T7332)
  • PIN reset now possible with Admin-PIN. (T7134)
  • Fix jumping cursor issue in certificate view search field. (T7510)
  • Fix issue with decryption of archives located at very long file paths. (T7532)
  • Always show dialog when setting trust in root certificates. (T7349)
  • "Show Audit Log" is now a button and opens after first click. (T7644), (T7782)
  • Upper case file extensions of encrypted files work now. (T7780)
  • Not functional configuration for AllowMarkTrusted is removed. (T7868)
  • Fix deletion of public key URL on ZeitControl OpenPGP v3.4 card. (T7881)
  • Group creation is not reset any more on opening certificate details window. (T7963)
  • Fix language settings for the filter names. (T7612)
  • RSA-1024 is not shown as unknown algorithm any more. (T7394)
  • The title of certify dialog works now for email-only user IDs. (T7816)
  • Command line options --help etc now work even if Kleopatra is already running. (T7686)
  • Main certificate view does now keep selected column width even if screen settings change. (T5304)

GUI (Pinentry)

  • The Show/Hide button is now accessible via keyboard. (T7736)
  • Fix an issue with pinentry icons in high-contrast mode. (T7737,T7230)

Engine (GnuPG)

  • gpg: Prevent a possible memory violation in the ASCII armor parser. (T7906,rG1e929abd20)
  • gpg: Prevent a potential downgrade to SHA1 when handling third-party key signatures. (T7904,rGdb9705ef59)
  • gpg: Fix a validation bug when using keyboxd. (T7983)
  • gpg: Take care about the prefix for cv25519 encryption. (T7649)
  • gpg: Error out on unverified output for non-detached signatures. [T7903,rG8abc320f2a]
  • gpg: Avoid a second Pinentry pop-up for a configured ADSK during key generation. (T7491)
  • gpg: Fix regression in using the secp256k1 curve. (T7698)
  • gpg: Make combination of show-only-fpr-mbox and show-unusable-uid work. (rGd5a4a2dc89)
  • gpg: Fix a double free of internal data in no-sig-cache mode. (T7547)
  • gpg: Fix a verification DoS due to a malicious subkey in the keyring. (T7527)
  • gpg: Fix --quick-add-key for Weierstrass EC keys with usage given. (T7506)
  • gpg: Fix handling of ascii armor without a CRC. (T7071)
  • gpg: Fix an import problem with keys having another primary key as a subkey. (T7527)
  • gpg: Print a warning if the card backup key could not be written. (T2169)
  • gpg: Validate the trustdb after the import of a trusted key. (T7200)
  • gpg: Exclude expired trusted keys from the key validation process. (T7200)
  • gpg: Fix a wrong decryption failed status for signed and OCB encrypted messages without a signature verification key. (T7042)
  • gpg: Fix --quick-set-expire for V5 subkey fingerprints. (T7298)
  • gpg: Fix curve "cv25519" v5 export regression. (T7316)
  • gpg: Fix getting key by IPGP record (RFC-4398). (T7288)
  • gpg: Print designated revokers also in non-colon listing mode. (rG9d618d1273)
  • gpg: Make --with-sig-check work with --show-key in non-colon listing mode. (rG0c34edc443)
  • gpgsm: Allow an empty subject DN also during import. (T7171)
  • gpgsm: Correct caching of trustlist.txt flags. (T7738)
  • gpgsm: Fix output of card serial number in colon listing. (T7914)
  • gpgsm: Fix delete and store certificate locking glitches. (T7855)
  • gpgsm: Skip expired certificates when selection a certificate by subject. (rG4cf83273e8)
  • gpgsm: Terminate key listing on output write error. (T6185)
  • gpgsm: More improvements to PKCS#12 parsing to cope with latest IVBB changes. (T7213)
  • gpg,gpgsm: Run keybox compression only when there are no other users. Improve keybox closing and locking order on read and write. (T7855)
  • gpgtar: Fix regression in end-of-archive detection. (T7757)
  • keyboxd: Fix schema of the fingerprint table. (T7892,rG81bb949755)
  • keyboxd: Use case-insensitive search for mail addresses. (T7576)
  • keyboxd: Fix a race condition on the database handle. (T7294)
  • gpg-agent, dirmngr: Fix a startup issue on Windows that could lead to blocking conditions. (T7829)
  • agent: Retry private key deletion in case of sharing violations for up to 400ms. (T7863)
  • agent: Fix a crash on Windows in the Putty support. (T7799)
  • agent: Fix for smartcard decryption with Brainpool keys. (T7709)
  • scdaemon: Accept P15 cards with an empty label. (rGdb25aa9887)
  • scdaemon: Fix an oddity in changing the PIN. (T7840)
  • scdaemon: Fix a harmless read buffer over-read in a function used by PKCS#15 cards. (T7662)
  • scdaemon: Fix posssible lockup due to a lost select result. (rGa7ec3792c5)
  • agent: Fix RSA signature handling for newer ssh specs. (T7882)
  • agent: Fix KEYTOCARD command when used with a loopback pinentry. (T7283)
  • dirmngr: Fix OCSP next-update check. (rG9ef87bcdb0)
  • dirmngr: Do not require a keyserver for "gpg –fetch-key". (T7693)
  • dirmngr: Fix a problem in libdns related to an address change from 127.0.0.1. (T4021)
  • dirmngr: Fix possible hangs due to blocking connection requests. (T6606,T7434)
  • gpgconf: Fix reload and kill of keyboxd. (T7569)
  • Fix a glitch in socket handling in case of a nonce mismatch. (rG645cf7d8fc)
  • Fix a race condition in creating the socket directory. (T7332)
  • Fix logic for certain recsel conditions. (rG8968e84903)
  • Global configuration files for Libgcrypt are now located under CSIDL_COMMON_APPDATA instead of /etc on the current drive. (rC995b870fd2)

Outlook Classic Add-In (GgpOL)

  • Fix handling of the BRING_TO_FRONT event. (rOaaf7bedef8)
  • Newly received encrypted emails can again be moved to folders via the context menu. (T7712)
  • Ensure that the name of a temporary file does not become too long and has a proper suffix. (T7722)
  • Also show attachments with long suffixes. (T7813)
  • Fix high CPU load for unsigned mails that are not selected. (T7771)
  • Fix incorrect UI status display for non-mail items. (T7646)
  • Fix incorrect UI status display when the disabledAutoPreview setting is used. (T7803)
  • Fix a possible plaintext leak when opening the very first PGP message in Outlook if Outlook is operating in read-as-plain mode. (T7858, rO88ab93687c)

Other Changes

Engine (GnuPG)

  • gpg: Escape characters with the high bit set in NOTATION status lines. (T7896)
  • gpg: Disable default compression for 7z compressed input. (rG53252628de)
  • gpg: Change the ADSK key binding time to use the current time. (T6882)
  • gpg: Do not show the non-standard secp256k1 curve in the menu to select the curve. It can however be specified using its name. (rG49a9171f63)
  • gpg: Allow updating a SHA-1 key certification w/o using the --force-sign-key option. (T7663)
  • gpg: The group key flag has now been fully implemented. (rG8833a34bf0)
  • gpg: Do not allow compressed key packets on import. (T7014)
  • gpg: Allow for signature subpackets of up to 30000 octets. (rG36dbca3e69)
  • gpg: Silence expired trusted-key diagnostics in quiet mode. (T7351)
  • gpg: Improve detection of input data read errors. (T6528)
  • dirmngr: New compatibility flag ocsp-sha256-certid to work with forthcoming libksba versions. (rG674aa54242)
  • agent: Accept a trustlist with a missing LF at the end. (rG1b4ac98de7)
  • agent: Enable "relax" in the trustlist by default and add flag "norelax". (rG7b133027ae)
  • agent: Recover the old behavior with "max-cache-ttl=0". (T6681)
  • gpgtar: Use log-file from common.conf only in --batch mode. (rGb389e04ef5)
  • Use a synchronous spawning method for the daemon processes. (T7716)
  • Improve file renaming in case of a sharing violation error. (T7829)
  • Use the KEM interface of Libgcrypt for encryption/decryption. (T7649,T7811,T7845)
  • Enable additional runtime protections in Speedo builds for Windows. (rG39aa206dc5)

Incompatible Changes

  • gpg: Deprecate the option --not-dash-escaped and ignore the NotDashEscaped armor header. (T7901)
  • The --supervised options of gpg-agent and dirmngr have been renamed to --deprecated-supervised as preparation for their removal. (rGa019a0fcd8)
  • There is no more default for an OpenPGP keyserver.
  • The Windows version will now be build for 64-Bit Windows and with the corresponding changes to the installation directory and Registry keys.

Known Issues

  • When using the keyboxd the export of multiple X.509 S/MIME certificates exports only the first. (T8026)

Versions of the Components

Component Version Remarks
GnuPG 2.5.16 T7642
Kleopatra gpg4win-5.0.0  
GpgOL 2.7.0  
GpgEX 1.1.0  
Libgcrypt 1.11.2 T7642
Libksba 1.6.7 T7173

This page as PDF.

Date: 2026-01-14

Author: g10 Code GmbH

Created: 2026-01-14 Wed 18:32

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