Quick Diagnosis
The useful clue is the file and request that exhausted memory, not the memory number alone.
Problem
WordPress Allowed Memory Size Exhausted
Diagnose WordPress memory exhaustion by identifying the request, plugin, import, image operation, or background job that consumed the memory limit.
Problem
A PHP process reached its configured memory limit before WordPress completed the request.
For: WordPress owners seeing allowed memory size exhausted errors in wp-admin, logs, imports, or front-end requests.
Workflow
What to review
Fix Strategy
Treat memory increases as capacity changes, not a substitute for finding a runaway plugin or oversized job.
WordPress ErrorsSeverity: MediumLast reviewed: 2026-09-16
Diagnosis
Symptoms, causes, checks, and fixes
Symptoms
- Logs include Allowed memory size exhausted.
- Admin screens, imports, image processing, or checkout actions fail.
- Increasing traffic or large jobs may make the issue intermittent.
Most Common Causes
- Large imports or exports.
- Heavy plugin queries.
- Image processing.
- Low PHP memory limit.
- Recursive or failing code.
How To Confirm The Cause
- Identify the exact URL or job in the error log.
- Check whether the failure started after a plugin update or import.
- Compare PHP memory limits between CLI, web, and cron contexts.
Fixes
- Stop or split the oversized job.
- Disable the component causing runaway memory usage.
- Raise the memory limit only after confirming the workload is legitimate.
How To Verify The Fix
- Repeat the original action with logging enabled.
- Confirm the memory error no longer appears.
- Review performance after the change.
When To Contact Support
Contact hosting support if memory settings cannot be changed or the host enforces a lower limit than WordPress expects.
References