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[Stefan Krueger]

Patching without admin rights, and what to do when your certificate expires

You can enable non-admin users to install patches to your application. To enable this, you must ship a digital certificate with your original setup and later sign the updates with the same certificate. This functionality was first introduced with MSI 3 (it was called LUA Patching and restricted to removable media back then) and improved in MSI 4 (Windows Vista). However this won't work nicely if you need to ship a patch after the valid date of the digital certificate has expired in the meantime.

For more information please read my blog post:
http://msmvps.com/bl...te-expires.aspx