To install the Patch 4:
1. Back up the VAC database.
2. Log off VAC Web UI.
3. Execute
VAC.ApplicationServer.x64_3.0.0.2795.msp as administrator on the VAC server, or run this cmdlet as administrator:
msiexec /update c:\VAC.ApplicationServer.x64_3.0.0.2795.msp /l*v C:\ProgramData\Veeam\Setup\Temp\VACApplicationServerSetup.txt
4. Execute
VAC.WebUI.x64_3.0.0.2795.msp as administrator on the VAC UI (IIS) server, or run this cmdlet as administrator:
msiexec /update c:\VAC.WebUI.x64_3.0.0.2795.msp /l*v C:\ProgramData\Veeam\Setup\Temp\VACWebUI.txt
5. Execute
VAC.ConnectorService.x64_1.0.1.616.msp as administrator on the VAC server, or run this cmdlet as administrator:
msiexec /update c:\VAC.ConnectorService.x64_1.0.1.616.msp /l*v C:\ProgramData\Veeam\Setup\Temp\ConnectorService.txt
6. Execute
VAC.ConnectorWebUI.x64_1.0.1.616.msp as administrator on the VAC UI (IIS) server, or run this cmdlet as administrator:
msiexec /update c:\VAC.ConnectorWebUI.x64_1.0.1.616.msp /l*v C:\ProgramData\Veeam\Setup\Temp\ConnectorWebUI.txt
7. Log in to VAC Web UI.