Why do I have to run mount command multiple times to mount the NFS share?

Issue

• Unable to mount NFS share. The share gets mounted after several attempts.

[root@hostname ~]# mount nfsserver:/abc/xyz /mnt
mount.nfs: access denied by server while mounting nfsserver:/abc/xyz
[root@hostname ~]# mount nfsserver:/abc/xyz /mnt
mount.nfs: access denied by server while mounting nfsserver:/abc/xyz
[root@hostname ~]# mount nfsserver:/abc/xyz /mnt
mount.nfs: access denied by server while mounting nfsserver:/abc/xyz
[root@hostname ~]# mount nfsserver:/abc/xyz /mnt
[root@hostname ~]# df -h /mnt/testn
Filesystem          Size  Used  Avail  Use%  Mounted on
nfsserver:/abc/xyz  4.7T  2.4T  2.3T   51%   /mnt

• Multiple mount attempts are required to mount the NFS share.
• Mounting NFS share requires multiple attempts.