Note that some of the issues described on this page are things we are actively working on, so they may not stay issues forever. These are tagged [TEMPORARY] .Try again later or check this page later.

Thinlinc login requires client version 4.15 or later

Please note that you will need to use the latest Thinlinc client (v4.15 or later) if you want to use Thinlinc on Sigma. You can download the most recent client from

The version number of your Thinlinc client is displayed in the upper right corner of the "Thinlinc Client" window (where you enter your password, etc.).

If you use a too old client you will get the error message "Server unexpectedly closed connection", "couldn't set up a secure tunnel to Thinclinc agent" or something similar.

User Area

User support

Guides, documentation and FAQ.

Getting access

Applying for projects and login accounts.

System status

Everything OK!

No reported problems


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