4xx Client error
HTTP 415 Unsupported Media Type
The server refuses the request because the body’s format (its Content-Type or Content-Encoding) isn’t supported for this method and resource, for example form data sent to an API that only reads JSON.
//_01 Uptime checks
Is 415 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 415 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 415 comes from a server that is running.
//_02 Causes and fixes
Why you see 415 and what to do
Typical causes
- A missing or wrong Content-Type header, such as JSON sent without application/json.
If you run the site
- Say in the response which formats are accepted.
If you’re a visitor
- Nothing you can change in a browser; contact the site if it persists.
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 415 mean?
The server refuses the request because the body’s format (its Content-Type or Content-Encoding) isn’t supported for this method and resource, for example form data sent to an API that only reads JSON.
Does an uptime monitor count 415 as down?
Down. It is outside the default 200–399 range, so a monitor reports an outage once a second check confirms it. If 415 is the answer you expect from that URL, add it to the monitor’s expected status codes.
Downtime is obsolete.
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