[MiKTeX] installation error

[Martina R. <guf...@ho...>]

Good morning,I got this error message during the installation of Miktex2.9 (complete version):
"C:\Program Files\MiKTeX 2.9\miktex/bin/x64\initexmf.exe" --register-shell-file-types --admin --log-file="C:\Program Files\MiKTeX 2.9\miktex\config\uninst.log" --verbose:log4cxx: No appender could be found for logger (initexmf).log4cxx: Please initialize the log4cxx system properly.
Sorry, but "MiKTeX Configuration Utility" did not succeed.
An error occurred:  source file: Libraries\MiKTeX\Core\Process.cpp  source line: 308  message: The operation failed for some reason.  info: C:\Program Files\MiKTeX 2.9\miktex/bin/x64\initexmf.exe
Does it mean that the installation was successful for all the other packages apart from this one only?If I want this package should i just reinstall it again separately?
Thank you in advance for your help!Martina