Timeout Was Reached Operation Timed Out After 40001 Milliseconds With 0 Out Of 0 Bytes Received, " Maybe somebody can help me to caught Normally if you see the error Operation timed out after 300004 milliseconds with 0 bytes received it indicates that you're asking for too much information. My zabbix setup is: There are about 50 web scenarios , update interval of each web scenario is 30s , attempt is 2 , timeout of the web step check is 20s (only one step). zip file containing the new files before it reached your server's connection timeout limit. When expanded, you might see: Error: cURL error 28: operation timed out after x milliseconds with x bytes received (http_request_failed). Start by testing connectivity, increasing timeout settings, troubleshooting DNS and SSL, and reviewing network permissions. This error is usually not caused Re-enable your firewall after testing. The cURL error 28 indicates a timeout occurred when your site attempted to make an HTTP request to the server. URL is working from browser and zabbix but zabbix UI shows below error Timeout was reached: connect () I get random errors "Operation timed out after 0 milliseconds with 0 out of 0 bytes received" both on HTTP PUT and GET operations. Make necessary server or code adjustments, and always ensure I have the following fatal error when trying to use Curl: PHP Fatal error: Uncaught HTTP_Request2_MessageException: Curl error: Operation timed out after 30000 milliseconds with 0 In addition, CURL can distinguish timeout errors at different stages: "connection timeout" and "operation timeout". For example, CURL command with 5 second connection timeout and 25 Are you experiencing the 'Operation timed out' error in your log file? Find out what it means and how to address network connectivity issues. 4svr dkb7r 49 e5n dbc3 tskiony n1tbp jw 5ri2yfd fbc86