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Customers upgrading from older versions of OSCE need to upgrade their standalone SPS servers in order to ensure compatibility with the OSCE servers and client machines.

SPS 3.x is backward-compatible with OSCE 10.6.

OSCE 11.0 and XG use a newer iCRC module which is only compatible with SPS 3.0 and later.

 SPS 2.6SPS 3.0SPS 3.1
OSCE 10.6YesYesYes
OSCE 11.0NoYesYes
OSCE XGNoYes*Yes
 
* The Predictive Machine Learning feature in OfficeScan XG only works with SPS 3.1.

With this in mind, upgrade the SPS servers before upgrading the OSCE server and client machines.