So setting the MaxNumFilters key to 20 probably only lifts the artificial limit and allows 14 possible filters. Thanks, Tronmech!Īfter some more research, it seems that Windows 7 has a maximum hard-coded limit of 14 network filter drivers… and for some reason, this setting in the registry reduces it further to 8, by default. Install 4.3.x (run installer as administrator, just in case).Change “MaxNumFilters” from 8 to 20 (decimal).Go into the registry at: HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Network.I’ll repeat the instructions here in case for some reason that post vanishes: Well… I really wanted to have the Workshop lab environment available, so despite the fact that last time I encountered this problem I didn’t find any useful help on the web, I tried again… and this time, I found something on the forums, a post by user Tronmech: Running as Adminstrator after a cold reboot didn’t help. This is followed up by “Installation failed! Fatal error during installation.”. “Oracle VM VirtualBox 4.3.20 Setup Wizard ended prematurely” because of “an error”. The problem is Virtual Box almost completely installs – until it gets a certain point, then the progress bar runs backwards and it says “rolling back install”, followed by: It works great on my Mac at home, but for some reason I’ve had problems installing 4.x on my work laptop (Lenovo W520, getting on a bit now but still recommended). Of course, being Oracle, it is a Virtual Box vm. I was preparing for an Oracle online workshop on Database 12c multi-tenancy, and as part of the prep, you get to download a VM image with the lab environment.
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