Why does my Installation Fail?
Installation of older versions of the Client before v22.214.171.12472 could fail because the downloaded customized installer could not communicate properly with our servers, thus it did not register the computer with the account.
Impacted versions (2015 - 2019)
Download a newer version of the Host, for example v126.96.36.19900, where the issue has been fixed.
Alternatively, as a workaround, using the generic installer of these older versions, where the installer was not customized and did not contain the account information, can also work.