Power Automate Recurrence Trigger Not Firing? Deep Dive into "WorkflowTriggerNotReady" Fix

📌 Problem Statement

A Power Automate cloud flow works perfectly when triggered manually, but fails when using a Recurrence trigger.

❌ Error

WorkflowTriggerNotReady
Trigger is not ready yet, please try again later

The flow never starts automatically and even manual "Run" fails when Recurrence is configured.

✅ Key Observation

• ✅ Manual trigger works flawlessly
• ❌ Recurrence trigger never fires
• ❌ Flow run fails immediately with trigger error

This clearly indicates that the issue is not within the flow logic, but with the trigger initialization layer.

🧠 Root Cause

Power Automate runs on top of the Azure Logic Apps runtime. The WorkflowTriggerNotReady error originates from the underlying orchestration engine.

This happens when:

• The trigger is not fully registered in backend scheduler
• The trigger metadata is stale or corrupted
• The scheduling service hasn’t initialized the flow

⚠️ Important Clarifications

🔹 Recurrence Trigger is NOT Connection-Based

• It is a built-in scheduler
• Does NOT depend on SharePoint, Dataverse, or any connectors
• Fixing connections will NOT solve this issue

🔹 Start Time Behavior

• Power Automate typically recalculates the next run if Start Time is in the past
• However, misaligned schedules may cause trigger readiness issues

✅ Best Practice: Set Start Time slightly in the future during testing

🛠️ Proven Fixes

✅ 1. Restart Trigger Registration

• Turn flow OFF
• Wait ~60 seconds
• Turn flow ON

✅ 2. Recreate the Recurrence Trigger

• Delete existing trigger
• Add a new Recurrence trigger
• Save and re-enable flow

✅ 3. Clone the Flow

• Use Save As
• Creates new backend identity
• Resolves hidden metadata issues

✅ 4. Adjust Start Time

• Remove Start Time OR
• Set a future UTC time

🧪 Quick Diagnostic Test

Create a test flow:

• Trigger: Recurrence (every 2 minutes)
• Action: Compose

Result Interpretation:

• ✅ Works → Original flow trigger corrupted
• ❌ Fails → Platform/environment issue

🎯 Summary

This issue is not caused by your flow logic.

It is a platform-level trigger initialization problem caused by scheduler readiness in the backend.

✅ Fastest Resolution

• Restart flow
• Recreate trigger
• Clone flow

🧠 Want to Understand the Why Behind This?

While this guide focuses on fixing the issue quickly, the root cause lies deeper in how Power Automate’s backend scheduler works.

I’ve written a detailed architectural deep dive explaining:

• How Recurrence triggers are executed internally
• Why WorkflowTriggerNotReady happens
• The role of Azure Logic Apps runtime and scheduler services

👉 Read the full architectural breakdown here:

Why Power Automate Recurrence Triggers Fail: Architectural Deep Dive