How To Run Skype 4.3 for Linux After November 2017

As you may already know, Microsoft has killed the good old Skype for Linux version 4.3. The classic app written in Qt, which was fast and lightweight, can no longer be used because it can't sign-in to the service. Here is a quick workaround that will revive the app for you.

On November 10, 2017, the Skype team made the official announcement on the Skype forums that the classic app for Linux had reached its end of life.

As announced earlier this year, the old Skype for Linux v4.3 is at its end-of-life and will be decommissioned in the upcoming weeks.

You will be automatically signed out of Skype until you update. Please, update to the new Skype 8.x, which is ready for you with lots of improvements at


In case you hit any issues, please check known issuessystem requirements, or post your questions directly to this forum. All your feedback will be greatly appreciated.

Kind regards,

The Skype Team

The classic Skype for Linux, version 4.3, was the last version of Skype with peer-to-peer protocol (P2P) support. The Redmond software giant is about to drop server-side support for all older Skype clients which use a peer-to-peer protocol to establish a connection between clients.

Today, if you sign out from your Skype 4.3 account, you won't be able to sign-in again.

The server-side software checks the client version. If its major version number is below 8, the login will be rejected. This simple check hints that if you modify the executable file of Skype 4.3, it will continue working. Here is how.

Run Skype 4.3 for Linux After November 2017

  1. Open a new terminal as root.
  2. Type the command which skype to see the full path to the Skype binary. Usually it is /usr/bin/skype.
  3. Now, run the following command and you are done!
    sed -i 's/4\.3\.0\.37/8\.3\.0\.37/' /usr/bin/skype

Substitute the /usr/bin/skype portion with the actual path to the Skype binary. The command will replace the Skype version from to

Note: If you have an older version of Skype, correct the values in the command.

It is worth mentioning that the solution can stop working at any moment. Microsoft is not interested in the classic Skype client.

You can download Skype 4.3 for various Linux distros if you need from using the following links:

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Author: Sergey Tkachenko

Sergey Tkachenko is a software developer who started Winaero back in 2011. On this blog, Sergey is writing about everything connected to Microsoft, Windows and popular software. Follow him on Telegram, Twitter, and YouTube.

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