@ Darkray: stcp2v30 is a component belong to the feature P2V and P2V is already removed in MSI file, it doesnt matter to snapshot a guest,my fault include it on the list,sorry about that. i have another one , Size:1.73 MB (1,818,421 bytes) MD5:484eb5ab151f4b7a617cd0dee9f14383 some features is diabled ,some components is deleted,not expect it work flawlessly,i'll test it on a clean xpsp3 environment,just need some time to reinstall OS, thanks the trick to use "msiexec /a",its very handy to fetch files we need.