6.5.1

Table Of Contents
Prerequisites
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Your current vCenter Single Sign-On must have been installed on a separate virtual machine (VM) or
physical server from your vCenter Server instance.
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Verify your configuration meets the upgrade requirements, see vCenter Server for Windows
Requirements.
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Complete the preparation to upgrade tasks. See Before Upgrading vCenter Server
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Verify that you have made a backup of your vCenter Server configuration and database.
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To verify that the VMware Directory Service is in a stable state and can stop, manually restart it. The
VMware Directory service must stopped for the vCenter Server upgrade software to uninstall
vCenter Single Sign-On during the upgrade process.
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Download the vCenter Server Installer. See Download the vCenter Server Installer for Windows
Procedure
1 Download the vCenter Server for Windows ISO file. Extract the ISO file locally, or mount the ISO file
as a drive.
2 In the software installer, double-click the autorun.exe file to start the upgrade.
3 Select vCenter Server for Windows and click Install.
The software runs checks in the background to discover your existing vCenter Single Sign-On
settings and notify you of any problems that can affect your upgrade process.
The vCenter Server installer opens to the Welcome page.
4 Verify the detected information and upgrade path.
If you see a dialog box identifying missing requirements instead of a Welcome screen, follow the
instructions in the dialog box.
5 Review the Welcome page and accept the license agreement.
6 Enter the credentials for the administrator@vsphere.local.
The installer runs pre-upgrade checks in the background to detect any issues that can cause the
upgrade to fail. You might receive a warning if the old certificates do not meet current VMware
security standards.
7 Configure the ports and click Next.
Verify that ports 80 and 443 are free and dedicated, so that vCenter Single Sign-On can use these
ports.
The installer checks the availability of the selected ports and displays an error message if a selected
port cannot be used.
8 Configure the install, data, and export directories and click Next.
The installer runs disk space and permission checks for the selected directories and displays an error
message if the selected directories do not meet the requirements.
vSphere Upgrade
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