The report contains the following information:
This table shows information about errors that caused site unavailability.
|Error code||Description||Possible reason for error|
|Bad Gateway||Invalid message from the proxy server||The server the site is hosted on is overloaded or incorrectly configured|
|Bad request||Syntactic error in request||The web server or website software is not set up properly|
|Bandwidth Limit Exceeded||Exceeded the limit on traffic||The site has been disabled because of exceeding the limit on traffic|
|Web server refused the connection request||The server the site is hosted on is overloaded or disabled|
|Connection timed out||The time for connecting to the server has expired|| |
The server the site is hosted on is overloaded or has an incorrectly configured firewall.
The server connection time is 10 seconds.
|Forbidden||Access forbidden||The server's access rights to the site are incorrectly configured|
|Gateway Timeout||The gateway or proxy server did not get a response from the higher-level server for completing the request||The server the site is hosted on is overloaded or incorrectly configured|
|Gone||Resource unavailable||The site was removed from hosting or is not available for technical reasons|
|Internal Server Error||Internal server error||Error in the site or hosting software|
|IP address is unknown|| |
Unknown IP address
|The address of the site's DNS server is incorrectly configured|
|Loop detected||The server detected an infinite loop when processing the request||WebDAV is incorrectly configured for the site|
|Maximum redirect reached: 5||Reached the maximum number of redirects: number of redirects||Redirects are incorrectly configured on the site. A redirect might be looping back to itself.|
|Network is unreachable||Network unavailable||There are networking problems on the site's host or on intermediary nodes in the internet|
|No Content||Response without contents||The web server is incorrectly configured|
|No response received after 10 s||No response was received from the web server within the specified number of seconds|| |
The site's host server is overloaded, or the network channel to the server is overloaded.
The server is taking too long to process the request, such as waiting for a response from a database
|No route to host||Hosting is unavailable||There are networking problems on the site's host, or DNS is not configured properly|
|Page was not found||The site was removed from hosting or incorrectly configured|
|Not Implemented||The server does not support the features needed for processing the request||The server the site is hosted on is incorrectly configured|
|Not Modified||Document was not changed||The web server is incorrectly configured|
|Remotely Closed||Web server closed the connection||The server the site is hosted on is overloaded. There may be problems with the server configuration|
|Request Timeout||Time for passing the request expired||The channel to the server is too slow|
|Temporary technical problems on the server side when processing requests|
|Response from is longer than 1048576||The size of the server's response is larger than 1 MB||Exceeded the size of the server response. There may be an error in the server settings|
|Too Many Requests||Exceeded the maximum number of requests|
|Unauthorized||Access to the requested resource requires authentication||The server's access rights to the site are incorrectly configured|
|Unavailable For Legal Reasons||Access is forbidden for legal reasons||For more information, contact your hosting provider|
The Yandex.Metrica robot that checks your site's availability collects data for the report.
The Yandex.Metrica site monitoring tool notifies advertisers of possible problems with their site. The monitoring algorithm checks site availability by requesting the home page.
A user who has subscribed to monitoring notifications is sent two types of email with the site addresses: