Direct answer
Start by checking whether the domain resolves, the server responds, the control panel or hosting status is available, recent plugin or code changes occurred, and whether the outage affects all pages or one function. The pattern usually tells you whether to inspect DNS, hosting, WordPress, plugins or custom code first.
Why it matters
This answer helps site owners locate the real layer of a WordPress problem before applying a fix. WordPress issues often sit between hosting, DNS, themes, plugins, performance, accessibility, backups, schema, content and support responsibility.
What to check
- Is the issue caused by hosting, DNS, WordPress, theme, plugin, cache, content or custom code?
- Is there a current backup and rollback path?
- Does the fix reduce risk or only hide the symptom?
Common mistake
Installing another plugin or changing hosting before identifying the real failure layer and protecting the site with backup and rollback.
Caveats
Medium caveat risk: use careful wording and recheck current, technical, platform, service-scope or public-account claims before publication. Keep the answer framed as guidance rather than a guarantee.