The Cluster Name Object (CNO) needs write permissions on the share and there needs to be 5MB free on the share.
So if your cluster name is CLUSTER1, then the DOMAIN\CLUSTER1$ account needs write permissions on the share.
We have confgured alwayson(SQl server 2016 SP2 on windows 2012 ) with two nodes and fileshare wintness use network share. need to secure the file share wintess access to other doman users in the compnay an limited acccess only for Windows failover custer services . But not sure what the users belongs/should have to custer services which will have access /rites on network share . Its very import to restricted down access other than cluster services . please see the following network share permissions
Any one knows please advice