Hi Mim0! I just want to say that using the reg-file for KB2264107 is not recommended for HFSLIP usage as it removes the CWD from the default DLL search order. Found out the hard way by trying to make a new HFSLIP environment using VM. HFSLIP can't extract hot-fixes with this reg-tweak, I always get the message “Extraction Failed” - “File is corrupt” and files are not being copied to TEMP directory for that reason. Manually extracting hot-fixes with an absolute path is working by the way. Example 1: Does not work (used internally by HFSLIP) HF\WindowsXP-KB950762-x86-ENU.exe /X:TEMP Example 2: Working as usual HF\WindowsXP-KB950762-x86-ENU.exe /X:C:\HFSLIP\TEMP If this is confirmed, maybe something can be mentioned in your update-list Mim0, other than it's optional? BTW, thanks for the time you put into HFSLIP...