4xx Client error
HTTP 407 Proxy Authentication Required
Like 401, but the credentials are needed by a proxy between the client and the server, not by the server itself. The proxy sends a Proxy-Authenticate header, and the client answers with Proxy-Authorization.
Defined in RFC 9110, section 15.5.8(opens in a new tab)
//_01 Uptime checks
Is 407 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 407 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 407 comes from a server that is running.
//_02 Causes and fixes
Why you see 407 and what to do
Typical causes
- A company or school network that routes web traffic through a proxy requiring login.
If you run the site
- Nothing to fix on your site: the proxy is on the visitor’s side.
If you’re a visitor
- Sign in to the network’s proxy, or ask your IT department.
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 407 mean?
Like 401, but the credentials are needed by a proxy between the client and the server, not by the server itself. The proxy sends a Proxy-Authenticate header, and the client answers with Proxy-Authorization.
Does an uptime monitor count 407 as down?
Down. It is outside the default 200–399 range, so a monitor reports an outage once a second check confirms it. If 407 is the answer you expect from that URL, add it to the monitor’s expected status codes.
Downtime is obsolete.
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