Hello, we started to migrate from XP to Windows 7, WPI is at the latest Version all Apps are working in XP. Sharedrive letter is normally B:\RIS_Repository so all Installations will be started over the Sharedrive path. B:\RIS_Repository\Java\...setup.exe In Windows 7 I also connect a drive \\server\reminst with B: and there is also the RIS_Repository, but all WPI Installs completly fail. I have now changed one or two to the full UNC Path and it works ? \\server\reminst\RIS_Repository\Java\...setup.exe Is this something which must be configured in W7 or in WPI?