Once you have all the prerequisites in place (backups, new software, disabling your AV if you need too), it's time to upgrade the current installation itself.
The process is fairly straight-forward and doesn't hold any hidden "gotchas", but you need to keep an eye on it in case it does fail, or rollback for whatever reason. In this case, reviewing the logs or Event Viewer will be key to any troubleshooting you have to do.
1. Extract the downloaded file to a directory of your choosing, and go to the root of that folder. Find setup.exe. At times there can be issues when running it as the logged on account, so rather right-click it and choose the option to "Run as Administrator". This will ensure it opens with elevated rights.
2. You're then shown a selection on how you want to install your software. Your iptions are:
* Simple Install which is the easiest way to install all the components of Symantec GSS
* Custom Install which will allow you to pick and choose the options, as well as the location of the installation
* Thin Client Install
* Component Install in which you can install any additional components of Symantec GSS
Choose the option you most need and click Install.
3. As always, there is a Software License Agreement you need to accept in order to proceed, so do so.
4. Once you have accepted the SLA, navigate to the location where the current installation of Symantec GSS is (for some reason it doesn't detect the exact location), and enter your license file.
5. You're then presented with a screen showing the GSS server's information (such as it's IP address, currently installation pach and the username and masked password used by the services). Verify everything is OK, and make any changes you need to before clicking Next.
6. Check and make sure the DB details are all correct, and click Next to chose the authentication (Windows NT/SQL). There should be no reason to change this from the current authentication method. Click Next, and choose Yes to the prompt about a previous installation of GSS being detected.
7. Check all the PXE settings, and make any changes you need too, and then click Next again. Choose OK (you have no choice) at the DHCP prompt, and then verify the IP address of the GSS server one last time.
8. The next screen is for where you want to install the GSS Console, and the options are on the GSS server itself, or on a remote computer. Make your selection, and then choose Next.
9. The final screen is a summary of the installation itself, so click Install, and then Yes when it prompts at the eXpress installation screen.
Validate the installation succeeded and that there are no errors by checking the logs and Event Viewer, and that all the services have been started up correctly. For good measure, you can restart the GSS server.
Once this is done, run LiveUpdate to ensure there are no additional patches to install, and do so if needed. If you stopped your AV during the installation, don't forget to start those services once more.