Start with the basics: click Update → Check now and try again after a restart of the app (or Windows).
If it still fails, check:
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Internet/VPN/Proxy: Make sure you’re online. Temporarily turn off VPN/proxy, or enter proxy details in Settings → Update→Proxy.
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Date & time: Incorrect system time breaks certificate checks—sync your clock.
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Firewall/AV rules: Allow the Gridinsoft app and updater through your firewall/endpoint security.
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Admin rights: Run the app as administrator for the update attempt.
Still no luck? Please contact our Support Team and include the update error text (or a screenshot) and the latest log—this helps us pinpoint the cause quickly.