Oh god it worke, thanks for help
Well then, I'll post the correct order of things to do (for usres with similar problems):
Keywords: mcafee enterprise 8.7i epo orchestrator 4 4.0 epolicy VSE install
HowTo:
0. Download the McAfee Agent 4.0 (MA400P2Win.zip)
0.1 Go to ePo and checkin the Package: MA400P2Win.zip
0.2 Go to ePo to the System Tab and select ALLsystems, click "Install Agents" and choose in the Dropdown Version 4.0 + click "Force Installation on existing agents" (or somethign smiliar)
1. Download the ZIP Package from McAfee (Name: VSE870LML.Zip)
2. Extract it but keep the ZIP
3. Go to ePo and check in the Package: VSE870LML.Zip
4. Go to Configuration --> Extensions --> New Extensions and add:
VIRUSCAN8700.zip
VIRUSCANREPORTS.zip
which are located in the extracted ZIP File from above
5. Run the "ePOPolicyMigration.exe" (also located on the extracted ZIO File from above) ON the Server where ePo is insatlled
6. Create New Clienttask --> Remove 8.5i + Install8.7i
7. Additonal: I still had to add all Policies new -.-
7. Done