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PuTTY GenΒΆ

PuTY Key Generator began mandating Putty Private Key (PPK) version 3 at some point within the past year or two.

Version 3 may not be compatable with some versions of SSH. PuTTY Gen supports an option that sets the default version to version 2.

Create/modify a Windows shortcut and add the following:

ppk-param version=2

For example, if the Target in the PuTTYGen shortcut is:

C:\ProgramData\chocolatey\lib\putty.portable\tools\PUTTYGEN.EXE --ppk-param version=2

Simply add ppk-param version=2 to the end of the Target value as follows:

C:\ProgramData\chocolatey\lib\putty.portable\tools\PUTTYGEN.EXE --ppk-param version=2

NOTE: This example assumes that PuTTY was installed with Chocolatey. The default installation directory is typically under C:\Program Files not under C:\ProgramData\chocolatey.