Hello @sewa_bal_gmail_com and @homer_J_simpson,
please give a look to the manual provided by @SASKiwi, although extensive, it explains quite well the process.
Generally speaking:
The process for several SAS installations is acceptably easy:
Backup of the current environment
If manually set up SSL, or Single Sign On or Reverse proxy, you need to undo those.
with the new license and the new SAS depot, you run the setup, which will proceed to update your binaries
When finished, it will update your configuration as well. If not, please run the SAS deployment manager yourself to Update the Existing configuration, where you will need to select each of your Levels.
Validate the environment: some customizations (config files mostly) might be lost and you will need to restore them.
If you undid SSL, Single Sign on or Reverse Proxy, re-do them.
Now, beware, this does not apply to every SAS installation: you might find some specifics for each SAS solution or component. Please read the migration or administration guide for each of your SAS solutions and or contact your SAS Technical Support. Always good to check if anything changes in the middle and you need to pay special attention to some details.
Also, if you don't feel comfortable with any of this, please contact your SAS account manager or a SAS partner to support you during the upgrade with an specialist.
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