Have current tested backups, console access and a list of critical services. Record current versions and review release notes for Webmin, Virtualmin and major runtime changes. Confirm the operating system remains supported and the configured repositories belong to trusted sources.

1. Open System > Software Package Updates and refresh available updates. Review the proposed package list and whether it includes a kernel, database or major runtime change.
2. Separate routine supported security maintenance from a distribution release upgrade or application-incompatible major update. Test the latter in a representative environment first.
3. Inspect held packages and custom repository policies. Do not bypass package signatures or accept an unexplained repository-key change to make the update proceed.
4. Apply the approved updates and keep the result visible until completion. Avoid launching another package manager while the first transaction is active.
5. Review requested restarts and reboot requirements. Schedule a controlled reboot when needed, retaining console access and a known recovery path.
6. Afterward verify running versions, Virtualmin configuration and representative services. Check the security advisory history when updating Webmin so relevant fixes are actually included.

No. A package update and a distribution release upgrade have different scopes. Follow the operating-system release-upgrade procedure separately and verify Virtualmin compatibility before that larger change.

Test panel login, website responses, database writes, mail and backups as applicable. Confirm the running kernel after a planned kernel reboot and inspect failed services. A downloaded package is not necessarily the version currently executing in a long-running process.

If a package transaction fails, preserve the exact error and determine whether it stopped before or after configuration. Use the operating system supported repair procedure. Do not remove core packages or restore an old database binary over newer data without a tested compatibility plan.

• Scheduling remote Virtualmin backups
• Managing a systemd service through Webmin
• Diagnosing a Linux package repository signature failure
• Inspecting Linux logs through Webmin

• Webmin: Software Package Updates
• Webmin: Software Packages
• Webmin: Security