Hello
I recently had the dreaded Error 1722 when trying to install to four computers. 1 was sucessful with 3 1722 failures. I tried everything, delete temp files, unreg and re-reg msiexec, install the latest windows installer, stop Anti-Virus services, etc. etc. This was all by suggestion from HTC after waiting on hold for 30 minutes and the final result was to consult support.microsoft.com in regards to windows installer errors.
How I resolved this:
First of all these computers are all XP Pro SP3 and all part of a domain. I logged off the current user and then logged in as administrator on the local computer account. Once logged in I then ran the install program and this worked perfectly on all three computers even with my Symantec AntiVirus program running. XP Home users will need to change how they log onto the computer so that they need to use the alt ctrl del method and then they can enter username administrator and as in most XP Home installs there is probably no password for the administrator account. Domain users may need to get the administrator password from their IT people.
Good Luck!
