while I was trying to slipstream updates with ldr/qfe option for my win7, some updates gave me error: Windows Package Manager: "Operation failed with 0x80070005 Access denied." before slipstreaming: - I used W7T for tweaks, removing very unnecessary packages (e.g. DVD Maker, Video & Audio Samples), some add-ons - After using W7T, I used sysprep to install some updates which can't be slipstreamed (e.g. .Net Framework 4 (with updates), DirectX,), install some tools P. S. : I using W7T in Windows Developer Preview <