I am using Windows 10 Entreprise 2015 LTSB (version 1507, build 10240) and .NET 4.7.1 is not supported for that version of windows. Sadly, it is in a work environment and I have no control on the version of windows that I am using.
My sourcetree installation is now unusable because of that issue and I need to revert back to an older version.
Here is another software having a similar issue:
https://github.com/digitalcreations/MaxTo/issues/182