Almost all of us noticed that web browser sends 404 error messages and this number with the link conveys an important massage which means the link address is wrong or not available. Such massage comes from web server. A 404 error massage also means that the requested address may available in future.
Generally the web server generates much error massage to explain that the link is working correctly or the data may have many problems. However, 404 massages also say that data may be available in future although currently it is not available. This massage may come from putting wrong url address.
According to HTTP 404 reaction code is trailed by a comprehensible ‘reason phrase’. The HTTP determination recommends the expression ‘Not found’ and numerous web servers naturally issue a HTML page that incorporates both the 404 code and the ‘Not found’ phrase. This indicates that temporary loss of current address or data. Using refresh or trying data back can correct the missing data.
Few tools produce and slither through a site to discover pages that give back 404 status codes. These instruments can be useful in discovering connections that exist inside a specific site. The constraint of these devices is that they just discover interfaces inside one specific site, and overlook 404s ensuing from connections on different sites.