Important Changes

Please Read: Potential calendar data loss issue

Some middleware versions (8.49, 8.50, 8.51) might -- under certain race-conditions -- delete calendar data. Please apply the corresponding latest Public Patch to avoid calendar data loss.

To figure out whether your end-users are affected, we created a troubleshooting guide for this specific issue.

Database

SCR-1709

Summary: Enlarge the "meta" column from BLOB to MEDIUMBLOB for the "oxfolder_tree" and "del_oxfolder_tree" tables

Added new update task com.openexchange.groupware.update.tasks.EnlargeMetaForOXFolderTablesTask enlarging the "meta" column from BLOB to MEDIUMBLOB for the "oxfolder_tree" and "del_oxfolder_tree" tables.

Configuration

The breaking change is only relevant if OX Count is part of the deployment. Customers now have the ability to deploy a centralized instance of OX Count. Additional details and further information can be found here