If you have problems installing FBackup on your computer, this is a list of the possible solutions you should try:
1. Restart the computer and try again.
2. Disable the antivirus/firewall and try again.
3. Download and run the full setup of FBackup from here: https://download.fbackup.com/download/s ... p-full.exe
4. Restart the Windows installer service, by following these steps:
Click Start, type services.msc in the Start Search bar, and press ENTER. If prompted by User Account Control click Continue.
Now locate the Windows Installer.
If they are not currently enabled right-click them, and select Start.
If the Windows Installer service is already in start mode, please right click on that service and select stop and again start the service.