4xx Client error
HTTP 423 Locked
A WebDAV status: the resource being accessed is locked, typically because someone else has the file open for editing.
Defined in RFC 4918, section 11.3(opens in a new tab)
//_01 Uptime checks
Is 423 up or down for a monitor?
Uptimecheck HTTP monitor
Default settings
Down. It is outside the default 200–399 range, so a monitor reports an outage once a second check confirms it. If 423 is the answer you expect from that URL, add it to the monitor’s expected status codes.
Is it down? checker
Free, at /is-it-down/
Up. The checker counts any answer below 500 as the site answering: a 423 comes from a server that is running.
//_02 Causes and fixes
Why you see 423 and what to do
Typical causes
- A file locked by another user or application on a WebDAV share.
If you run the site
- Check for stale locks if files stay locked after they were closed.
If you’re a visitor
- Wait until the other person is done, or ask them to close the file.
Know the moment your site stops answering as it should
An Uptimecheck monitor requests your page as often as every minute, checks the status code against the ones you expect, confirms a failure with a second check and then alerts you.
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Questions
What does HTTP 423 mean?
A WebDAV status: the resource being accessed is locked, typically because someone else has the file open for editing.
Does an uptime monitor count 423 as down?
Down. It is outside the default 200–399 range, so a monitor reports an outage once a second check confirms it. If 423 is the answer you expect from that URL, add it to the monitor’s expected status codes.
Downtime is obsolete.
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