storageDatabasedatabaseDatabase Errorhourglass_bottomTimeoutlinkconnectioninfoWordfenceerror_outlinescan errorstar_halfUncommonwarningModerate

Wordfence scan failed: MySQL server has gone away

Wordfence writes scan status to its own tables during a scan. When MySQL ends the connection, Wordfence cannot finish the write and aborts the scan. The termination happens because the server reaches its timeout, packet size limit, runs out of memory, or crashes.

The error appears as MySQL server has gone away and stops the scan immediately.

Symptoms

[dashicons-warning]
Scan stops abruptly
The scan ends with the error message Wordfence scan failed: MySQL server has gone away
[dashicons-database]
Error writing value for wfsd_engine
Wordfence shows MySQLi error 2006 in the Scan screen
[dashicons-admin-site]
Intermittent database connection errors
Admin pages load slowly or display error establishing a database connection while the scan runs

Common Causes

MySQL timeout exceeded
The query exceeds wait_timeout or max_allowed_packet and MySQL closes the connection
Server memory pressure
Out of memory kills MySQL process causing it to restart during the scan
Corrupted Wordfence tables
Tables such as wfstatus become read only and trigger the error
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