VCF 9.1 upgrade hangs at 51% during the "Deploy VCF Management Components"

Products

• VCF Operations

Issue/Introduction

• "Import VCF Operations in Fleet Lifecycle" task status is stuck 'Running' progress message shows: The Fleet lifecycle 'Component import' task with ID #### failed. Internal errors: Provided SSL thumbprint '####' does not match the certificate's thumbprint '####'.
• Prior to this issue, the certificate for VCF Operations for Networks was rotated in accordance with KB: Upgrading VCF 9.0 environment to 9.1 fails when trying to "Import VCF Operations in Fleet Lifecycle"
• Retrying the VCF Management Components deployment generates duplicate VCF Operations network adapters, which display a warning status under Operate → Administration → Integrations → Accounts → Network Adapters in the VCF Operations UI.

Environment

• VMware Cloud Foundation 9.1.x
• VCF Operations 9.1.x
• SDDC Manager 9.1.x
• VCF Operations for Networks (formerly VMware Aria Operations for Networks/vRNI)

Resolution

1. Sign into VCF Operations UI
2. Navigate to Operate → Administration → Integrations → Accounts → Network Adapters → Identify duplicate adapter instance → Click on 3 dots beside the adapter instance → Click Delete → Uncheck the box 'Delete related objects' 
3. Navigate to Operate →  Administration → Trusted Certificates → Locate certificate entry with VCF OPS NI listed in the column Trusted Objects  → Click 3 dots beside the certificate → Delete 
4. Navigate to Operate → Administration → Integrations → Accounts → Network Adapters → Click on original adapter instance → Click Validate Connection → Accept the certificate when prompted → Click Save
5. Apply the steps in KB "Deploy VCF Management Components" task fails during "Import VCF Operations in Fleet Lifecycle" stage