Issue : While Installing SCCM 1511. Installation failed with with error COMException message: Unknown error (0x80005000)
Below is screen shoot for fail
Step 1: Verified Site server Permission on Root Active directory server and found Permission was missing.
Step 2: Since setup was creating on VM hence provided VM is not ping able and not able to communicate to the root ad server and authentication is getting failed.
After correcting both findings issue seems to resolved.
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