Still doesn't work Made iexpress put it in svc-exe xpcreated it with just sp2, no tweaks, no other updates nothing installed it using xplode (t-12) just msi with /qn, just sp2, no tweaks, no other updates nothing installed it using xplode (t-12) with iexpress, just sp2, no tweaks, no other updates nothing installed it with runonceex just msi /qn works! installed it with runonceex with iexpress works! it just will not install on t-13 or t-12 edit: and oh yeah I was using 5.1 all the time @Jobbie, if you test it can you tell me if it works for you?