Fix OneDrive “Can’t open file” or “Make sure OneDrive is running”
What to do first
Troubleshoot OneDrive “Can’t open file” or “Make sure OneDrive is running” by following the official decision path while preserving user data.
This is a general troubleshooting guide, not an announcement of a current outage.
Affected products and symptoms
- Product
- Microsoft OneDrive
- Versions and conditions
- OneDrive for Windows
Symptoms
- Only blue-cloud files fail to open
- Windows says to make sure OneDrive is running
Causes and conditions
The sync app needed to hydrate online-only files is stopped.
Before you start
- Before changes, record and preserve the web original, sharing permission, and blue-cloud or green-check status.
- Change one item at a time and record the original symptom after each stage.
Precautions
- Do not bulk-delete unrelated settings or data.
- Exclude personal data and credentials; share only the necessary parts of the web original, sharing permission, and blue-cloud or green-check status.
Step-by-step instructions
Confirm the item opens at onedrive.com and download an important copy.
If it is absent online, do not reset sync first.
Blue cloud is online-only, an outlined green check is locally available, and a solid green circle is always available. Do not confuse these states.
Search Start for OneDrive and open the desktop app.
Check the cloud icon is signed into the correct account.
Always keep on this device downloads content, so provide more free space than the target size. Selecting a folder affects its descendants.
Right-click in File Explorer and choose Always keep on this device.
Stay online until the green check appears.
If no cloud icon appears, check hidden icons. Record sign-in or organization-block messages if startup still shows none.
Install Windows and OneDrive updates, then restart.
Ask the administrator about Files On-Demand policy on work devices.
Check filename and modified time on the web before editing locally to avoid overwriting a newer original with stale cache.
Check the result
- open the green-check item offline and confirm no sync error after reconnecting
- Check adjacent basic functions for side effects from the change.
If the problem continues
- continue in OneDrive web and send diagnostics through Help & Settings > Send feedback or to the administrator
- When continuing with a workaround, preserve original files or account data separately.
Scope of this guide
Troubleshooting guide — Troubleshoot OneDrive “Can’t open file” or “Make sure OneDrive is running” by following the official decision path while preserving user data.
Frequently asked questions
Is a blue cloud an error?
No; it means online-only and requires connectivity to open.
It opens on the web.
That confirms cloud data exists and narrows the issue to the PC app.
Official sources and dates
Source publication or resolution date: Not specified. Sources checked: 2026-09-05. The check date is not the date the problem first occurred. Interface labels can vary between versions and display languages.
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