#1 - OSD stuck after a reboot, when installing Packages.
The Workwaround was to add a 3 minutes Timeout
(Pause step is a run command line: timeout /t 181 /nobreak)
Got the fix from : https://social.technet.microsoft.com/Forums/en-US/c0ef57c6-cabc-4b4e-b54e-b2d380b78b16/osd-failures-after-upgrade-to-1710-when-setting-up-machines-with-language-packs?forum=ConfigMgrCBGeneral
#2 - Tasks sequence dissapeared from SCCM console
From the SCCM Console , Selecting a Task Sequence, then clicking on the References TAB. Choose one software in the list, right click and select View Content Status. Go back to the task sequence. The tasks sequences (In fact, all tasks in the same folder) dissapeared. (No Item Found). If I hit F5 to refresh, I got this error message : The requested object information could not be retrieved. Refresh the Configuration Manager console to verify that another administrator has not moved or deleted the object, or that the role-based administration security scopes or security roles for the object or current user have not changed.
If I close and Open the SCCM Console again, everything is OK, until I do the same thing again.
Thank you