I'm a Windows 10 user. It's the 4th time i run the following steps:
 install Bitdefender Total Security 2019
 
 Installer hang at about 75% completion
 
 After a lot of hours restart the computer or crash
 
 Bitdefender is installed but a some features missing and the FIX button do nothing. Moreover the program do not start at startup.
 
 Uninstall with uninstaller tool that always exit with errors and say to contact support
 
 Perform registry, cache and system clean
 
	 
	Please note that:
 Windows defender is disabled
 
 All actions are performed with administrator privileges
 
 In %temp% folder the installer creates .tmp files that can't be removed or read
 
	 
	I'm starting to think about a refund, never had so many problems with an antivirus.