A client program for the SSH, Telnet and Rlogin network protocols

PuTTY (32-bit)

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PuTTY 0.64

  -  1.8 MB  -  Open Source
Free Download

Security Status

  • Latest Version

    PuTTY 0.81 (32-bit)

  • Operating System

    Windows XP / Vista / Windows 7 / Windows 8 / Windows 10

  • User Rating

    Click to vote

  • Author / Product

    Simon Tatham / External Link

  • Filename

    putty-0.64-installer.exe

  • MD5 Checksum

    58dc8df5849c65e50df0e37f6a47bc2e

Sometimes latest versions of the software can cause issues when installed on older devices or devices running an older version of the operating system.

Software makers usually fix these issues but it can take them some time. What you can do in the meantime is to download and install an older version of PuTTY 0.64.


For those interested in downloading the most recent release of PuTTY (32-bit) or reading our review, simply click here.


All old versions distributed on our website are completely virus-free and available for download at no cost.


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If you have any questions or ideas that you want to share with us - head over to our Contact page and let us know. We value your feedback!

Download PuTTY 0.64

  • PuTTY 0.64 Screenshots

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    PuTTY 0.64 Screenshot 1
  • PuTTY 0.64 Screenshot 2
  • PuTTY 0.64 Screenshot 3
  • PuTTY 0.64 Screenshot 4
  • PuTTY 0.64 Screenshot 5

What's new in this version:

- Security fix: PuTTY no longer retains the private half of users' keys in memory by mistake after authenticating with them. See private-key-not-wiped-2. (Sorry! We thought we'd fixed that in 0.63, but missed one.)
- Support for SSH connection sharing, so that multiple instances of PuTTY to the same host can share a single SSH connection instead of all having to log in independently.
- Command-line and configuration option to specify the expected host key(s).
- Defaults change: PuTTY now defaults to SSH-2 only, instead of its previous default of SSH-2 preferred.
- Local socket errors in port-forwarded connections are now recorded in the PuTTY Event Log.
- Bug fix: repeat key exchanges in the middle of an SSH session now never cause an annoying interactive host key prompt.
- Bug fix: reset the bolded-text default setting back to what it used to be. (0.63 set it to something wrong, as a side effect of refactoring.)
- Bug fix: IPv6 literals are handled sensibly throughout the suite, if you enclose them in square brackets to prevent the colons being mistaken for a :port suffix.
- Bug fix: IPv6 dynamic port forwardings should work again.

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