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

PuTTY (32-bit)

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PuTTY 0.68

  -  2.7 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-0.68-installer.msi

  • MD5 Checksum

    af76da456a0adf7d3747b181411da227

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 0.68.


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 0.68

  • PuTTY 0.68 Screenshots

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    PuTTY 0.68 Screenshot 1
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  • PuTTY 0.68 Screenshot 3
  • PuTTY 0.68 Screenshot 4
  • PuTTY 0.68 Screenshot 5

What's new in this version:

- Security fix: an integer overflow bug in the agent forwarding code
- Security fix: the Windows PuTTY binaries should no longer be vulnerable to hijacking by specially named DLLs in the same directory (on versions of Windows where they previously were)
- Windows PuTTY no longer sets a restrictive process ACL by default, because this turned out to inconvenience too many legitimate applications such as NVDA and TortoiseGit. You can still manually request a restricted ACL using the command-line option -restrict-acl
- The Windows PuTTY tools now come in a 64-bit version
- The Windows PuTTY tools now have Windows's ASLR and DEP security features turned on
- Support for elliptic-curve cryptography (the NIST curves and 25519), for host keys, user authentication keys, and key exchange
- Support for importing and exporting OpenSSH's new private key format
- Host key preference policy change: PuTTY prefers host key formats for which it already knows the key
- Run-time option (from the system menu / Ctrl-right-click menu) to retrieve other host keys from the same server (which cross-certifies them using the session key established using an already-known key) and add them to the known host-keys database

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