Connecting via a proxy causes a network deadlock to crash the client in desktop version 0.9.7.x.
Attempt to launch Spotify whilst connected to the internet via a proxy.
None (although see additional information). For the time being use the web player (if available - may not work behind a proxy either!) if you are unable to use a connection not via a proxy.
This appears to effect both Windows and Mac.
Update: Reports show this only appears to be effecting SOCKS5 proxies, if you have another proxy available such as HTTPS it should still work.
There are some additional work arounds posted below (thanks guys!). Bear in mind Spotify DO NOT recommend downloading/installing Spotify from any other sources apart from spotify.com or official App Stores.
If you are having either of these issues please can you post below:
Your Spotify version number (Help/Spotify > About & Click to copy to clipboard or via your system control panel).