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Migrating from Sametime® Version 8.5.2 IFR1 or Version 8.5.2
Migrate from IBM® Sametime® 8.5.2x by deploying Sametime 9.0.1 on separate computers, migrating environment settings and user data, and then redirecting users to the new deployment.
Upgrading Sametime® clients
Use the information in this section to help users upgrade their IBM® Sametime® 8.5.2.x and 9.0 Connect clients to the new release.
Supporting older Sametime® clients during migration
Maintaining a flexible login policy during a migration to a new release of IBM® Sametime® is especially important in environments that include a large number of older Sametime clients. Immediately enforcing a minimum client version can result in a high volume of users experiencing login problems.

Supporting older Sametime clients during migration

Maintaining a flexible login policy during a migration to a new release of IBM® Sametime® is especially important in environments that include a large number of older Sametime clients. Immediately enforcing a minimum client version can result in a high volume of users experiencing login problems.

You can configure how servers respond to login requests from older client versions. The sametime.ini and STsecurity.ini files provide settings that enable you to perform the following tasks: