Changes to NSX T failing after the restore of NSX T

Products

• VMware NSX

Issue/Introduction

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

Environment

VMware NSX T 3.x

VMware NSX 4.x

Cause

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)

Resolution

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.