The InteruptReason type of the downloads API defines a set of possible reasons why a download was interrupted.

A downloads.DownloadItem's error property will contain a string taken from the values defined in this type.


Values of this type are strings. Possible values are split into categories, with each set having the same substring at the beginning:

File-related errors:


Network-related errors:


Server-related errors:


User-related errors:



  • "CRASH"

Browser compatibility

Update compatibility data on GitHub
ChromeEdgeFirefoxOperaSafariFirefox for Android
InterruptReasonChrome Full support YesEdge Full support 79Firefox Full support 47Opera Full support YesSafari No support NoFirefox Android No support 48 — 79


Full support  
Full support
No support  
No support

This API is based on Chromium's chrome.downloads API.

Microsoft Edge compatibility data is supplied by Microsoft Corporation and is included here under the Creative Commons Attribution 3.0 United States License.