
b. The next step is an attempt to attach to the target machine’s share. This attempt is made even if the
previous step succeeds. It may or may not work since we do not guarantee the ability to attach to a
share during uninstall, but if it can attach, it removes all the VCM files that it finds base on a filter
stored in the database.
c. Uninstall then tries to connect to the remote registry. If it can, it removes all the VMware registry
entries it finds.
7. Fully release synchronization lock: If uninstall worked correctly, a connection cannot be made with the
module installer there is no further action needed to fully release synchronization lock. However, if
uninstall fails and the module installer can be reached the runtime lock is released.
8. Partially release the synchronization lo ck on the target machine: If uninstall worked this step is a no-
op else the runtime action lock time stamp and the request id are cleared.
9. Cleanup request data: The request is removed and the state of this request is complete.
Upgrade
Upgrade is the process by which various modules, either install infrastructure or product, may be
upgraded. This request is identical to an Agent install request with the single caveat that an Agent must be
present in order to upgrade. Beyond that, see the Install section for details.
Change Protocol Request
A change protocol request is applied when you wish to change the protocol the Collector uses when
communicating with a machine. Currently there are two protocols used for communicating with agents:
HTTP and DCOM. DCOM is historically our oldest supported protocol and dates back to the 3.0x version
of the VCM product. HTTP protocol was introduced with 4.5. A change protocol request works as follows:
n
When changing the protocol from DCOM to HTTP, the EcmComSocketListenerService module is
shipped over and executed.
n
When changing from HTTP to DCOM, the EcmComSocketListenerService is removed. The following is
an example of changing protocol.
Windows Agent Installation
VMware, Inc. 43
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