Here is the error log :
023005_019
023005_019
023005_019 ----------------------------------------------------------------
023005_019
023005_019 cFos Broadband Connect (x64) v1.06.1069 installer.
023005_019 Command line: "C:\Users\user\AppData\Local\Temp\$cfsfx.0\setup.exe" -parentdir:"C:\Users\user\Downloads\Programs\"
023005_019 OS:
Windows Vista (x64) (4 procs) (x64) v6.03.9600 (Home) (faked to 6.02.9200), LangId 4009
023005_019 OS build is known as '???? (x64)'
023005_019 CPU: GenuineIntel; Type 0; Family 6, Model 13, Step 4; Features=bfebfbff
023005_019 Time now: 2017-08-15 02:30:05.019
023005_019 Windows directory is "C:\WINDOWS\", system directory is "C:\WINDOWS\system32\".
023005_019 User is member of admin group; has full admin rights
023005_034 Verifying envelope of authentication file fileauth.txt: succeeded.
023005_034 Verifying files' authentication: succeeded.
023005_066 Starting wizard.
023014_201 Starting installation.
023017_215 Stopping daemon.
023017_215 Calling wbc.exe -d
023017_262 Decrypting all files in directory C:\Users\user\AppData\Local\Temp\$cfsfx.0\
023017_309 Restoring backup files from previous installation.
023017_309 Decrypting all files in directory C:\Program Files\cFosBC
023017_325 Setting user write permissions.
023017_419 File extension .cfosbc registered.
023017_419 Setup status A: 2-2
023017_419 Setup status B: 2-2
023017_419 Calling "C:\Program Files\cFosBC\cfosbc.exe" -install
023018'466 ------ cFosBC (x64) daemon v1.06.1069 starting ------
023018'466 OS: Windows Vista (x64) (4 procs) (x64) v6.03.9600 (Home) (faked to 6.02.9200), LangId 4009
023018'466 User is member of admin group; has full admin rights
023018'466 Starting installation
023018_450 Waiting for daemon process termination.
023018'466 Homedir=C:\Program Files\cFosBC\
023034'282 Copying cfosbc6.inf to Inf Directory.
023034'829 Failed to copy cfosbc6.inf from C:\Program Files\cFosBC\ to Inf Directory.
023034_829 Daemon process returned 1.
023034_829 Setting device path from "%SystemRoot%\inf" (Type 2) to "%SystemRoot%\inf"
023034_829 Calling "C:\Program Files\cFosBC\cfosbc.exe" -install
023044'954 ------ cFosBC (x64) daemon v1.06.1069 starting ------
023044'954 OS: Windows Vista (x64) (4 procs) (x64) v6.03.9600 (Home) (faked to 6.02.9200), LangId 4009
023044'955 User is member of admin group; has full admin rights
023044'957 Starting installation
023044'957 Homedir=C:\Program Files\cFosBC\
023045'308 Copying cfosbc6.inf to Inf Directory.
023045'498 Failed to copy cfosbc6.inf from C:\Program Files\cFosBC\ to Inf Directory.
023044_941 Waiting for daemon process termination.
023045_507 Daemon process returned 1.
023045_507 Resetting device path to "%SystemRoot%\inf" (Type 2)
023045_507 Daemon process has shut down and daemon file is writable.
023046_487 Error installing driver.
023046_487 Setup status C: 2-2
023104_444 Setup status A: 2-2
023104_444 Setup status B: 2-2
023104_444 Calling "C:\Program Files\cFosBC\cfosbc.exe" -uninstall
023104'974 ------ cFosBC (x64) daemon v1.06.1069 starting ------
023104'974 OS: Windows Vista (x64) (4 procs) (x64) v6.03.9600 (Home) (faked to 6.02.9200), LangId 4009
023104'974 User is member of admin group; has full admin rights
023104'974 Starting deinstallation
023104'990 Deinstalling network component 'cFosBC'.
023105'021 Find component cFosBC -> 00000001, Success. Condition was FALSE.
023105'021 Apply+
023105'037 Apply-
023105'037 Netcfg complete (0).
023105'037 No entries in C:\WINDOWS\inf\SetupApi.App.log
023105'336 Deinstalling service+ (cFosBC)
023105'336 opening service+
023105'336 opening service-
023105'336 Installing service-
023105'336 cFosBC service status: query failed
023104_959 Waiting for daemon process termination.
023105_352 Daemon process returned 0.
023105_352 Daemon process has shut down and daemon file is writable.
023105_896 Setup status C: 2-2
023105_896 Rolling back installation.
023105_900 Error 145 removing directory C:\Program Files\cFosBC: The directory is not empty.
023105_900 Rollback complete.
023105_901 File extension .cfosbc unregistered.