you are right, i've seen it just now that extentions are not displayed in the program itself, but in the ini files they are: #Silent InstallsReapers.Microsoft.Silverlight.5.1.30514.0.x64::/q /doNotRequireDRMPrompt /ignorewarnings;NO;12,75 MB;D:\Mijn documenten\Downloads\Reapers.Microsoft.Silverlight.5.1.30514.0.x64.exe;Always InstalledSFX_SumatraPDF_2.5.2::/s /register /opt plugin, pdffilter, pdfpreviewer;NO;4,02 MB;D:\Mijn documenten\Downloads\SFX_SumatraPDF_2.5.2.exe;Always InstalledChromeStandaloneSetup::/silent /install;NO;40,57 MB;D:\wnew xxx\WinToolkit_Apps\ChromeStandaloneSetup.exe;Always Installed the other things you mentioned i will investigate... Added: it looks it will work now... i've choosen 'delete old installers' sumatra & silverlight now installs but chrome doesnt i also uses WinToolkit 1.5.3.3 instead of 1.5.3.2 maybe that would have mad a difference... Chrome still doesn't work tho.... but i will try your advice added: i didn't succes searching for the enteprise edition of chrome, how and where do i get that?