https://bugs.winehq.org/show_bug.cgi?id=40022
--- Comment #3 from roman@hargrave.info roman@hargrave.info --- (In reply to Sebastian Lackner from comment #1)
Steam works fine for me with Wine Staging 1.9.1. Please provide full log of the terminal output, including description where you got the Wine version from and how you set up the prefix. Please note that the package "wine-staging" installs to /opt/wine-staging/bin/wine on some distributions. If you compiled Wine Staging yourself, make sure that all necessary build dependencies are found during the ./configure step.
Yes, I am running the correct WINE. I have tested this with three versions:
* wine-1.8 (prebuilt from debian repo's): steam works
* wine-1.9.1 (git 8676f7b with ntdll patch for chromium sandbox): steam & steam store works
* wine-1.9.1 (staging): steam does not work
Where did you get your copy of wine-staging, and what distro are you using?
I have provided the output as an attachment.