Windows Media Player cannot perform the requested action because you chose to cancel it.
For example, if you were trying to play a protected file and that file required you to download a license, this error message might appear if you cancel the license acquisition process before it is completed.
The server encountered an internal error or misconfiguration and was unable to complete your request.
Please contact the server administrator at webmaster@informationworker.forsenergy.ru to inform them of the time this error occurred, and the actions you performed just before this error.
More information about this error may be available in the server error log.
Additionally, a 500 Internal Server Error error was encountered while trying to use an ErrorDocument to handle the request.