Upon enabling the Zerto Virtual Replication plugin for the vSphere Web Client (see Enabling Zerto Virtual Replication GUI in vSphere Web Client), an administrator may notice that previously active vSphere Web Client plugins, such as the VDP plugin, may no longer be accessible. This solution article explains the reason for this behavior, as well as a potential workaround.
2.0 Update 3 (Xeme) and Greater
This behavior is a VMware known issue, as discussed in the following VMware KB article, where enabling another solution, specifically VMware vCenter Support Assistant, by the same means as used to enable the ZVR plugin results in the same behavior:
In order to workaround this issue, an administrator can configure a separate web interface on another server, to allow the ZVR plugin to use one, and the other solution to use the other.