Hi, depending on the work the upgraders will have to do (eventually gain access to network ressources during the upgrade) this could be required to switch to Windows authentication.
Windows Authentication is always on, there is Windows Authentication mode and Mixed mode (including SQL Server authentication) so you normally on´t have to turn on something rather than granting the appropiate person access to SQL Server) If they have been granted access as sa in the past, just put their Windows account in the sysadmin servern role and you are done. But remember to drop them of the role if you don´t want them to have access after the upgrade.
HTH, Jens Suessmeyer.
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