An IT technician encounters a problem where the Freedom Scientific setup up fails displaying an error 80070643 or the error cites a warning regarding a Microsoft Visual C++ component error.

Please try the following to resolve the issue to get the software installed.
The installer may fail in managed IT environments where downloading is restricted. To fix the problem download the offline installer for the product of the same version that the regular online installer has failed.
The install errror may occur due to conflicts between the currently instralled Microsoft Visual C++ components and the versions that are required by the Freedom Scientific product. These can normally be resolved by removing all Visual C++ components and restarting the PC, then run the Freedom Scientific product installer again. Please use the steps below to fix the problem:
The problem may be due to problems with the core image files of Windows being corrupt. Plerase open an elevated command prompt and run the System File Checker, further details here:
https://support.microsoft.com/en-us/help/929833/use-the-system-file-checker-tool-to-repair-missing-or-corrupted-system
After completing the SFC check restart the computer and try the installer again.
If possible consider disabling any group policies on the machine to ensure none of these are causing an issue with the installation.
Try running a silent install/uninstall to complete the action. Use the silent uninstall if you are attempting to remove a product from the computer, details here:
https://support.freedomscientific.com/Support/TechnicalSupport/Bulletin/1724
The problem may be that the latest product does not work with an older build of the target computer operating system such as Windows 10 1904. If installing to an older Windows build try visiting the offline installer page for the product and selecting an earlier version in the drop down:
If the above works continue to install the latest version of the product if the license permits.