RPC Shutdown doesn't work

after reinstalling my pc with windows 11, rpc shutdown does not work anymore. the pc has the same name and ip address. i have enabled RemoteRegistry, allowed wmi in the firewall and created LocalAccountTokenFilterPolicy in the registry. when i have the windows firewall on i get the error Connection failed: NT_STATUS_IO_TIMEOUT and when i turn off the firewall i get Connection failed: NT_STATUS_CONNECTION_REFUSED. i can’t find any more solutions for this. can you help me?