OneDrive Error Codes

How to Fix OneDrive Resource #266 actionMap Error

Rana GarciaRana Garcia Oct 9, 2026 870 views

Question details

The user is unable to download files from OneDrive because the page refreshes, hides the files, and displays a specific resource scope error.

How to Fix the OneDrive Resource #266 actionMap Error
Product
OneDrive
Device & OS
not provided
Scenario
Attempting to download files using the OneDrive web interface.
Observed behavior
When a download is initiated, the interface refreshes, files disappear from view, and the error message "Resource #266 'actionMap' is being consumed but is not available in the current scope" is displayed.
Before you start

Verify if this is an isolated browser issue or a known service outage by quickly testing your OneDrive account in an incognito or private browsing window.

Solution 1Recommended

Clear Browser Cache and Disable Extensions

Because this error frequently occurs on the OneDrive web client due to scripting conflicts, clearing your browser data and turning off extensions can resolve the issue.

Browser extensions, particularly ad blockers or script managers, can interfere with OneDrive's background processes when fetching file download maps. Flushing the browser's temporary data forces OneDrive to load a fresh version of the site's scripts.

1
Access browser settings

Click the three-dot or gear menu in your web browser and navigate to the Settings or Options menu.

2
Clear browsing data

Locate the Privacy and Security section, select 'Clear browsing data', choose to clear 'Cookies and other site data' as well as 'Cached images and files', and confirm.

3
Turn off extensions

Navigate to the Extensions management page in your browser and toggle off all active extensions. Refresh the OneDrive page and attempt the download again.

Clear Browser Cache and Disable Extensions
Quick Alternative: If you are in a hurry, opening OneDrive in a Private or Incognito window temporarily bypasses most cached data and extension conflicts.
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Frequently Asked Questions

What does the Resource #266 actionMap error mean in OneDrive?

This error generally indicates a scripting failure within the OneDrive web application itself. It means the background code required to map and execute your download request failed to load or process correctly in your current browser session.

Are my files deleted if they disappear during this error?

No. The files disappearing is merely a visual glitch caused by the web interface refreshing unexpectedly. Your actual data remains safely stored on Microsoft's cloud servers.

Why does this error only happen on one of my devices?

Since this error is often tied to corrupted browser cache, outdated cookies, or specific browser extensions, it usually remains isolated to the specific device and browser where those conflicting files or add-ons are present.