404 error
Resource not found
A 404 error is a message indicating that a requested webpage cannot be found on a server.
The number comes from HTTP status codes—404 specifically means the server is reachable but the particular page doesn't exist.
Users encounter 404 errors when following broken links or mistyping URLs: I clicked the old bookmark but got a 404 error.
Often shortened to just 404 or used figuratively for anything missing or unavailable.
- page not foundMissing webpage message
- file not foundRequested data absent
- broken linkURL pointing to nothing
- dead endPassage without outlet
- link rotURLs becoming invalid over time
missing · web · web page · internet · glitch · website · server · HTTP · status code · oops · lost · redirect · URL · browser · crash · frustration · user experience · refresh
- tech problemsbug, paper jam, low ink, dropped calls, bugs
- Computer Errorscrash, warning, file not found, access denied, kernel panic
- network errorsconnection timeout, disconnected, no internet, connection refused, network outage
- software errorsbug, glitch, exception, timeout, memory leak
- dev culturedebug, bug, code review, pull request, git
- software bugsbug, glitch, defect, fault, flaw
error type/cause
404 error500 error
Backend processing failure
server error · server crash · service unavailable · database error · timeout error