Challenge
After updating vCenter to 6.7U1, processing of all VMs fails with "Object reference not set to an instance of an object."
Cause
The issue is triggered by an update to the vSphere API version in vCenter 6.7 U1.
Solution
The issue affects only Veeam Backup & Replication 9.5 Update 3a.
Please upgrade to Veeam Backup & Replication 9.5 Update 4, it works fine with 6.7 U1 out of the box, no additional steps needed.
NOTE: The displayed version in vSphere is not 6.7.1 for Update 1. The only way to verify the version is by the build number.
The version can be verified by checking the build number in the following VMware KB Articles.
ESX\ESXi Hosts - https://kb.vmware.com/s/article/2143832
vCenter Servers - https://kb.vmware.com/s/article/2143838?lang=en_US
The version can be verified by checking the build number in the following VMware KB Articles.
ESX\ESXi Hosts - https://kb.vmware.com/s/article/2143832
vCenter Servers - https://kb.vmware.com/s/article/2143838?lang=en_US
More Information
Veeam Backup & Replication support for VMware vSphere: https://www.veeam.com/kb2443