Administration → Data Collection and Check for Update → Checking for Updates Manually
If your system is eligible for upgrade and your server is behind a firewall, your server can't automatically check for updates. However, you can still request update information through the web application.
If the checking period elapses and you don't have any update messages, you'll receive a warning in your alerts. This prompts you to request the update information manually.
To check for updates manually:
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