"Your evaluation license has expired" error message after 1st Rider launch

The error message may appear after 1st Rider startup (just after activating 30-day evaluation) and may look like this:

Reason:

Rider stores a couple of settings related to evaluation license in its configuration files. If these config files are corrupted for some reason, evaluation check is not passed, resulting in this error.

Solution/Workaround:

• On Windows: delete "C:\Users\\.Rider2017.1" folder from disk.
• On Mac OS: delete "~/Library/Preferences/Rider2017.1" folder from disk.
• On Linux: delete "~/_._Rider2017.1" folder from disk.