Troubleshooting

Each page starts from what you see, lists the causes from most to least likely, and gives a check for each. The guides in Guides hold the procedures these pages point to.

You see	Page
The panel address shows “Hyperion is updating”, “The update didn’t finish” or “The control panel isn’t answering”, refuses the connection or warns about its certificate	The panel does not load or says it is updating
“Incorrect username or password”, “This account is locked”, “Too many failed attempts from this address” or a code that does not match	Cannot sign in to the panel
A website shows “This site is temporarily unavailable.”, 502, 503, 504, or 403 and 404 on every page	A website shows an error page
“Certificate issuance failed”, “DNS pre-check failed” or a browser certificate warning	A certificate request fails
“node … unreachable”, “response failed authentication” or “envelope too old”	A node shows as unreachable or its answers are rejected
A backup in the state failed, “not enough disk space”, an off-site copy that is not confirmed	A backup fails
A site’s mail is not delivered, or “message file too big”	Mail from a website is not delivered
WordPress shows a critical error or a white page	WordPress shows a critical error
/api/v1 answers 400, 401, 403, 404, 409 or 429	An API request is rejected

An update that stops partway is covered in Recover from a failed update. Moving or importing a site that fails is covered at the end of Move or copy a site and Import sites with one command. A failed slow action has its cause in its log: see Follow background jobs.