Veeam Backup & Replication plug-in missing in vSphere HTML5 Web Client after upgrade to VMware vSphere 6.7

Challenge After installing Veeam 9.5 Update 3a and simultaneous upgrade of vSphere from 6.5 to 6.7 Veeam vSphere Web Client Plugin might stop working for vSphere HTML5 Web Client. However it is still operational in vSphere Flash/Flex Web Client. The issue is only reproducible in case the plugin w...