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Database Access: Web Error Messages

Web Server Error Meessages

Some error messages have more to do with the Web servers you are tyring to access rather than something being wrong with your computer. Here is a list of error messages (also called HTTP status codes) that you might encounter and their meanings.

Message Meaning
400 bad file request Usually means the syntax used in the URL is incorrect (e.g., upper case letter should be lower case; wrong punctuation)
401 unauthorized Server is looking for some encryption key from the client and is not getting it. Also, wrong password might have been entered. Try it again, paying close attention to case sensitivity.
403 forbidden / access denied Similar to 401. Special permission is needed to access the site - a password and/or username if it is a registration issue. Other times they might not have the proper permissions set up on the server.
404 file not found Server cannot find the file you requested. File has either been moved or deleted, or you entered the wrong URL or document name. Look at the URL. If a word looks misspelled then correct it and try again. If that does not work, backtrack by deleting information between each backslash until you come to a page on that site that is not a 404. From there you might be able to find the page you are looking for.
408 request timeout Client stopped the request before the server finished retrieving it. A user might click the stop button, close the browser, or click a link before the page loads. Usually occurs when servers are slow or file sizes are large.
500 internal error Could not retrieve the HTML document because of server configuration problems. Contact the site administrator.
501 not implemented Web server does not support a requested feature.
502 service temporarily overloaded Server congestion; too many connections; high traffic. Keep trying until the page loads.
503 service unavailable Server busy, site might have moved. or you lost your Internet connection.
Connection refused by host Either you do not have permission to access the site or your password is incorrect.
File contains no data Page is there but is not showing anything. Error occurs in the document. Attributed to bad table formatting, or stripped header information.
Bad file request Browser might not support the form or other coding you are trying to access.
Failed DNS lookup The Domain Name Server cannot translate your domain name request into a valid Internet address. Server might be busy or down, or incorrect URL was entered.
Host unavailable Host server down. Click the reload icon or go to the site later.
Unable to locate host Host server is down, Internet connection is lost, or URL typed incorrectly.
Network connection refused by the server The Web server is busy.
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