Upgrades to large portions of the University of Oregon's technology infrastructure will require a 12-hour window of downtime for e-mail, UO websites and other resources, starting at 7 p.m. Friday night, June 20.

Services are slated to be available again by 7 a.m. Saturday, June 21.

During the maintenance window, users will not be able to send or receive e-mail messages. Incoming e-mail messages will be stored and delivered after the work has been completed.