Cluster Administrator access is denied

Warning: following the below steps could harm your system if you don’t know what you’re doing, please have a up-to-date backup.

Problem: Domain account and local admin both in local administrators group, get an error when trying to access cluster with cluster administrator. An error occurred attempting to open cluster node ‘name’. access is denied. Error ID: 5 (00000005)

The possible Fix: check registry setting HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Lsa and key LMCompatibilityLevel if that is set to 1 you might have this problem. Other things could effect cluster admin and give this error, this is one of them.

  1. backup registry
  2. run regedit
  3. navagate to HKLM\System\CurrentControlSet\Control\Lsa
  4. LMCompatibilityLevel
  5. if set to 1 change to 2 (other options could work in your environment, also no reboot should be needed)
  6. Cluster administrator should now work
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