"Access to the file was denied" on extension's page refreshing

Add-ons Development
#1

I’ve got web-extension proxying requests to the local server via nativeMessaging.

If server response with 307 and location “moz-extension://{ext-id}/page.html” browser displays it well. But when I try to refresh the page, error “Access to the file was denied” is occurred. Refreshing in any other cases works well:

  • direct jump to “moz-extension://{ext-id}/page.html”
  • displaying “moz-extension://{ext-id}/page.html” with browser.tabs.update

Such behavior was in several previous versions too, not just in the last 103 and but I didn’t tested if it was always like this.

If I doing something wrong or this is browser issue?

Firefox: 103.0 (64-bit)
OS: macOs moterey 12.5, m1

#2

After small research we find out that the problem appears only if we use addon debugging from the folder. If the xpi archive was used the problem is absent.

#3

Have you found a solution ? I am developing an extension that has a local page, and I’m seeing the same problem. Refreshing the page does not work with extension loaded from disk

Also macOS monterrey

#4

Has there been any solution to this issue since?

I am redirecting to my extension page and if I reload the extension page I get "Access to the file was denied”.

On macOS Ventura with Firefox 111.0.1

#5

no, i haven’t got any progress.

In our product we just mark this as minor bug and forget

1 Like
#6

Thanks for the answer!

It is an important feature and I was able to reproduce it using an almost blank extension.
I filed a bug report at: https://bugzilla.mozilla.org/show_bug.cgi?id=1826867