mystek With XVI32 serch for string 83 F8 9D 75 07 8B C6 in sfc_os.dll and replace to 83 F8 9D 75 07 90 90. Update checksum with ModifyPE, cab it and put in FIX folder. Not relly sure, but put in winnt.sif : [systemFileProtection] SFCDisable=ffffff9d SFCShowProgress=1 SFCQuota=1