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Server Errors The main problem of server errors is that when Google spiders initiate the crawling of webpages, the HTTP code returned is a 5XX status code. This will cause Google to fail to crawl the standard webpages. There are various reasons for server errors: the website is under maintenance; there are batch errors in the website's programs. The best solution is to find the program errors and make appropriate modifications. If the website is under maintenance, use the site - closure protection function on the Google Search Console to standardize the operation and then proceed. -
Access Denied The main problem of access denied is that when Google spiders initiate the crawling of webpages, the HTTP code returned is a 403 status code. This will also cause Google spiders to fail to crawl the standard webpages. There are also various reasons for access denied: restricted website permissions; IP address rejected; server traffic overload. The solutions to these error causes are quite simple. Give Google spiders sufficient permissions to crawl the pages by identifying the directory where the webpages are located. Check whether the IP address of Google spiders is blocked. If the server traffic is too large, upgrade the server. -
Page Not Found The main problem of page not found is that when Google spiders initiate the crawling of webpages, the HTTP code returned is a 404 status code. This is the most common error, and almost all websites have such pages. There are numerous reasons for page not found: expired group - buying webpages; accidentally deleted databases; deleted junk posts on forums. In fact, these problems can be easily solved. Create a proper 404 page and return the 404 page when a 404 status code is encountered. -
Other Errors Other errors cover a relatively wide range of items, but the problems are roughly the same. That is, when Google spiders crawl the webpages, the HTTP code returned is a 4XX status code, excluding 403 and 404. The sources of these problems are also quite diverse: the requested URL is too long [too many parameters]; identity verification is required; the media type is unsupported; the browser does not accept the requested page. Solving these problems is relatively complex. If the URL is too long, the sorting position of the parameters needs to be adjusted. For identity verification, it needs to be controlled through partial website permission control and other program issues. Try to cover each media type on your website.
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