Nadia Almas

HiHi Gilles, you don't need an installer—just download the standalone putty.exe binary directly to run it portable. That error is just due to old SSH ciphers in version 0.28. I also prefer portable setups and lightweight software like Stick War Legacy Apps to keep Window.[https://stickwarlegacyapps.org/].

The "Couldn't agree a host key algorithm" error usually happens because modern OpenSSH servers disable older key exchange algorithms (like diffie-hellman-group1-sha1) by default, while older PuTTY builds don't support modern ones like curve25519-sha256. Updating PuTTY is definitely the right move. If you're looking for the portable zip build, you can usually extract the .msi using 7-Zip or

The host key algorithm error happens because older ExtraPuTTY versions lack modern SSH ciphers like rsa-sha2-256. To keep your setup installerless, you can download the portable .zip archive directly from the official PuTTY site—just extract it and run the .exe without any MSI installation

The host key algorithm error happens because older ExtraPuTTY versions lack modern SSH ciphers like rsa-sha2-256. To keep your setup installerless, you can download the portable .zip archive directly from the official PuTTY site—just extract it and run the .exe without any MSI installation

The host key algorithm error happens because older ExtraPuTTY versions lack modern SSH ciphers like rsa-sha2-256. To keep your setup installerless, you can download the portable .zip archive directly from the official PuTTY site—just extract it and run the .exe without any MSI installation