The message "Unknown manufacturer" is displayed during installation
If you are still using Microsoft Windows, this message can be displayed during installation and/or the update, depending on the version and your settings. This concerns a pure Microsoft license problem, but can be ignored. After pushing away the display, the normal process takes place without hindrances.
Unable to connect to update
There may be problems connecting to the update server. Then it makes sense to load a new program version and install it over the current status. The data will be retained.
how does the home version differ from the professional version?
Only one user can work in the home version, the professional version can be used by several employees.