HTTP 5xx Server Error Codes (IIS 6.0)
Error codes in the 5xx range indicate server problems. Table 11.9 HTTP 500-Class Client Error Codes Returned by IIS lists the HTTP 5xx-class codes that IIS returns. The descriptions for most codes are self-explanatory. When additional information about a code is required, it is provided in one of the following sections.
| Table 11.9 HTTP 500-Class Client Error Codes Returned by IIS | |
| Status Code | Condition |
500.x | Internal server error. |
501 | Header values specify a configuration that is not implemented. |
502 | Bad gateway. |
503 | Service unavailable. |
504 | Gateway timeout. |
505 | HTTP version not supported. |
