How to Troubleshoot a SharePoint Manual Flow That Does Not Start
Question details
The user needs to resolve an issue where a manually triggered Power Automate flow in a SharePoint library hangs and fails to launch.
- Product
- Microsoft SharePoint / Power Automate
- Device & OS
- not provided
- Scenario
- Triggering a manual Power Automate flow from a SharePoint document library.
- Observed behavior
- The flow execution hangs before the confirmation dialog appears, failing to run, though the issue occurs inconsistently across different users and locations.
Ensure you have the necessary edit permissions for the SharePoint document library and the Power Automate flow before making structural changes or running test flows.
Isolate the Issue Using a Blank Test Flow
By creating a simplified test flow, you can determine if the hanging issue is caused by the complex flow itself or the SharePoint library environment.
Often, complex triggers or specific action configurations can cause a flow to hang before the confirmation screen. Comparing it with a basic flow helps narrow down the root cause.
Navigate to Power Automate and create a new, simple manually triggered flow for a selected item (for example, a flow that only changes the content approval status).
Go to the affected SharePoint document library, select a file, and trigger the new simple flow.
If the simple flow runs successfully but the original hangs, inspect and compare the trigger configurations and user permissions between the two flows.
If the issue is isolated to the original flow, try deleting its trigger and recreating it, or rebuild the flow step-by-step to identify the failing action.
Rule Out Environmental and File-Specific Factors
Test the flow under different environmental conditions to eliminate local glitches, browser cache issues, or file-specific conflicts.
Boost Your Productivity with WPS Office
While troubleshooting complex Microsoft 365 issues like SharePoint flows can take time, managing your everyday documents shouldn't be difficult. WPS Office provides a lightweight, fast, and completely free alternative for your Word, Excel, and PowerPoint needs.
Frequently Asked Questions
Why does my Power Automate flow hang on the confirmation screen?
This can happen due to browser caching issues, incorrect permission configurations on the SharePoint library, or overly complex flow triggers that fail to resolve in time to display the prompt.
How can I check if the flow trigger is the problem?
Create a completely blank manually triggered flow in the same SharePoint environment. If the simple flow works but the original does not, the original flow's trigger or subsequent data connections are likely causing the freeze.
Does the file type in SharePoint affect manual flows?
Yes, occasionally certain file types or files with highly restrictive metadata can prevent a manual flow from gathering the necessary context to start, causing the trigger confirmation to hang.
