Explanation
The correct process to upgrade the CCP Web Service is D. Uninstall and reinstall the CCP Web Service. The CCP Web Service is a component of the CyberArk Central Credential Provider (CCP) that enables applications to retrieve secrets from the CyberArk Vault using REST API calls. To upgrade the CCP Web Service, you need to first uninstall the existing CCP Web Service from the Windows Server Manager or the Control Panel, and then reinstall the CCP Web Service using the latest installation package from the CyberArk website. The installation package contains both the Credential Provider and the CCP Web Service components, and you need to run the AimWebService.msi file to install the CCP Web Service. You also need to make sure that the CCP Web Service has the correct configuration and permissions, and that the CyberArk CRL (Certificate Revocation List) is open from the CCP server.
The other options are not correct processes to upgrade the CCP Web Service. Running "sudo yum update aimprv" from the CLI is a command to update the Credential Provider on Linux, not the CCP Web Service on Windows. Double-clicking the Credential Provider installer executable and selecting upgrade is a process to upgrade the Credential Provider on Windows, not the CCP Web Service. Double-clicking the AimWebService.msi and selecting upgrade is not a valid option, as the CCP Web Service does not support an upgrade option, and you need to uninstall it first before reinstalling it. References = Upgrade the Central Credential Provider (CCP) - CyberArk, Section "Upgrade the Central Credential Provider (CCP)" Central Credential Provider web service configuration - CyberArk, Section "Central Credential Provider web service configuration"