500 Internal Server Error
The server encountered an unexpected condition that prevented it from fulfilling the request.
Use Cases
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How does 500 Internal Server Error affect Search Engine Optimization (SEO)?
How does Google treat Server Error 5xx HTTP response status codes?
5xx and 429 server errors prompt Google's crawlers to temporarily slow down with crawling. Already indexed URLs are preserved in the index, but eventually dropped. If the robots.txt file returns a server error status code for more than 30 days, Google will use the last cached copy of the robots.txt. If unavailable, Google assumes that there are no crawl restrictions. Any content Googlebot received from URLs that return a 5xx status code is ignored.
Specific information from Google on HTTP response status code 500:
Googlebot decreases the crawl rate for the site. The decrease in crawl rate is proportionate to the number of individual URLs that are returning a server error. Google's indexing pipeline removes from the index URLs that persistently return a server error.
Information from Internet Standards from IEFT
The 500 (Internal Server Error) status code indicates that the server encountered an unexpected condition that prevented it from fulfilling the request.
Source: 500 Internal Server ErrorGooglebot decreases the crawl rate for the site. The decrease in crawl rate is proportionate to the number of individual URLs that are returning a server error. Google's indexing pipeline removes from the index URLs that persistently return a server error.