This release merges upstream PuTTY 0.84 changes and includes PuTTY CAC specific changes. This release was compiled with Microsoft Visual Studio 2026.
Enhancements:
- Added a portable mode. This can be enabled by creating an empty putty.dat file in the same directory as the executable. The PuTTY user interface also contains a new root-level 'Portable' pane that can be used to export current settings to the file. This file makes all PuTTY registry settings portable (not just PuTTY CAC specific settings).
- Changed Windows cryptographic algorithm usage to attempt CNG APIs and fallback to CAPI APIs.
Changes:
- Updated to latest FIDO2 libraries.
- Numerous minor bug fixes.
MSI Installers
https://github.com/NoMoreFood/putty-cac/raw/0.84/binaries/puttycac-0.84-arm64.msi
https://github.com/NoMoreFood/putty-cac/raw/0.84/binaries/puttycac-0.84-x86.msi
https://github.com/NoMoreFood/putty-cac/raw/0.84/binaries/puttycac-0.84-x64.msi
ZIP Files (Contains All Executables)
https://github.com/NoMoreFood/putty-cac/raw/0.84/binaries/puttycac-0.84-arm64.zip
https://github.com/NoMoreFood/putty-cac/raw/0.84/binaries/puttycac-0.84-x86.zip
https://github.com/NoMoreFood/putty-cac/raw/0.84/binaries/puttycac-0.84-x64.zip
Binary Hash Information
https://github.com/NoMoreFood/putty-cac/raw/0.84/binaries/puttycac-hash.txt
Other Tools
https://github.com/NoMoreFood/putty-cac/raw/0.84/tools/CertificateTransformer.ps1