SEPM 12 showing wrong OS version in home screen report.
You can raised support ticket for same
Check this same problem thread and mithun comments
Thanks In Advance
SEPM Knowledgebase Documents
what is the exact version of SEPM and SEP client?
Help Link: http://www.symantec.com/business/support/overview.jsp?pid=54619
SEPM is 12.1.2 (RU2) and SEP client is 12.1.1 MP1.
what is the OS running on the client? and what does it show on SEPM?
What the OS version installed and what OS disply in symante?
Please revert wht OS running on the all client machine ?
And I would like to suggest you to upgrade all client to 12.1 R2 also.
Please mark your thread as 'SOLVED' with the answer that helps you.