If the SSL-certificate on your VMware Horizon View Composer server is about to expire, it will have to be replaced. The process is pretty straight forward.
Import the new certificate (in PFX-format) in the Computer certificate store. You can use the MMC snap-in or certutil to accomplish the task. If it's not a publicly signed certificate, you will also need to make sure the intermediate and trusted root CA is imported.
Open an elevated command prompt.
Stop the VMware Horizon Composer service:net stop svid
Navigate to the install location of View Composer. The default location is C:\Program Files (x86)\VMware\VMware View Composer. On a 32-bit machine, leave out "(x86)".