NSX T UI shows error message
Write operations are temporary blocked (Error code: 401)
Compute manager / virtual center will likely show no issue for registration / connection status with NSX T UI
VMware NSX T 3.x
VMware NSX 4.x
NSX T appliance restore requires healthy connectivity with compute manager. The restore of NSX T appliance without healthy communication with the VC server may cause write operation to fail. Following may cause issue for healthy connectivity between NSX T and virtual center.
a. Network connectivity from NSX T appliance to virtual center server
b. Name resolution issue
c. Mismatch of password (The password for virtual center contained in NSX T backup and virtual center server current password are different)
Before the restore of the NSX T appliance make sure
a. Network connectivity between NSX T appliance and virtual center server
b. Matching password for the VC account.