Sometimes, SQL Server performance counters become corrupted or disabled. If Zabbix relies on WMI or performance counters directly, this will result in "no data."
From the Zabbix server CLI:
"MSSQL: Failed to fetch info data (or no data for 30m)" typically indicates a communication or permission breakdown between Zabbix and your SQL Server zabbix mssql failed to fetch info data -or no data for 30m-
: If the SQL instance is under heavy load, the info fetch might timeout. Try increasing the parameter in the Zabbix server/agent configuration files. Detect Issues in Your Zabbix Instance Before It's Too Late 25 Mar 2026 — Detect Issues in Your Zabbix Instance Before It's
: Ensure the odbc.ini file does not store credentials. For Zabbix, username and password should be passed as arguments from the frontend. You are staring at your Zabbix dashboard, and
: Ensure the driver name in /etc/odbcinst.ini matches exactly what is defined in your /etc/odbc.ini DSN.
You are staring at your Zabbix dashboard, and the dreaded red indicator has appeared. The trigger message reads: