Many webmasters encounter 404 page errors when they use American cloud servers for their websites, thinking that this is the problem of the space provider. The space provider mainly serves the operation and maintenance of the cloud server, and it is not completely directly related to the 404 error, which leads to the 404 page error. There are many reasons for this, let's briefly introduce them below:

1. The cause of the error

The HTTP 404 error means that the webpage pointed to by the link does not exist, that is, the URL of the original webpage is invalid. This situation often occurs and is difficult to avoid, for example: changes in the generation rules of webpage URLs, renaming or moving of webpage files, spelling errors in import links etc., causing the original URL address to be inaccessible; when the web server receives a similar request, it will return a 404 status code, telling the browser that the requested resource does not exist.

Generally speaking, there are three reasons for this error:

1. The website cannot be accessed on the requested port.

2. The Web service extension locking policy blocks this request.

3. The MIME mapping policy blocks this request.

The 404 error page is mainly aimed at website optimization and enhancing the user experience of the website. A 404 error page needs to be set up on the server (you can also make a 404 error page yourself), and then when our page access error occurs, if We set up a 404 error page, and it will jump to other pages of the website, which reduces dead links caused by errors, enhances the user experience of the website, and is also conducive to Baidu's inclusion, so we are doing general When optimizing a website, it is generally necessary to set up a 404 error page to optimize the website.

  Precautions

(1) Do not redirect 404 errors to the homepage of the website, otherwise it may cause the homepage to disappear in the search engine.

(2) Do not use an absolute URL. If you use an absolute URL, the status code returned is 302+200.

(3) After the 404 page is set, be sure to check whether it is correct. But the HTTP header must return a 404 status. This is mainly related to search engines, because if your website generates many pages but the search engines see many of the same normal pages, it may be mistaken as cheating.

(4) Do not automatically jump to the 404 page, let the user decide where to go. This involves the production of 404 pages. It is very important to provide user experience, and the production of 404 pages is very knowledgeable.