GitHub Actions schedule cron not triggering (default branch only)

Scheduled workflows always run against the version of the workflow on the repository default branch. A schedule defined only on a feature branch will never fire.

What this error means

A cron-scheduled workflow does not run on time, while the same file exists only on a non-default branch.

# This schedule only fires if this file is on the DEFAULT branch
on:
  schedule:
    - cron: '0 6 * * *'

Common causes

Schedule defined off the default branch

Cron triggers are evaluated from the default branch copy only.

Repository inactivity disabling schedules

Scheduled workflows can be auto-disabled after long repo inactivity.

How to fix it

Place the schedule on the default branch

1. Merge the workflow with on: schedule to the default branch.
2. Confirm the repo is active so schedules are not auto-disabled.
3. Remember cron times are UTC and may run with some delay.

on:
  schedule:
    - cron: '0 6 * * *'   # 06:00 UTC daily, from default branch

How to prevent it

• Define schedules on the default branch and keep the repo active.
• Account for UTC and possible scheduling delay during peak load.

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