If you issue the show stacking command and see that the stack topology is a daisy chain, you must resolve the problem before the stack will function properly.
# show stacking Stack Topology is a Daisy-Chain This node is not in an Active Topology Node MAC Address Slot Stack State Role Flags ------------------ ---- ----------- ------- --- *00:04:96:7d:fc:9a - Disabled Master ---
To solve a daisy-chain problem, follow these steps: