CIFS: mounting a filesystem fails with EOPNOTSUPP (-95) on RHEL 9.2

Solution Verified - Updated -

Issue

  • Mounting a CIFS share on RHEL 9.2 fails with the error below:
Aug  2 09:51:03 myhost kernel: CIFS: VFS: decode_ntlmssp_challenge: forced packet signing but server does not seem to support it
Aug  2 09:51:03 myhost kernel: CIFS: VFS: \\cifsserver Send error in SessSetup = -95

Environment

  • RHEL 9.2
  • PureStorage CIFS/SMB server

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