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the app:// protocol is blocked

  • 2 replies
  • 2 have this problem
  • Last reply by magicloud

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We have the following website: that uses the app:// protocol to launch apps with our custom software, appWave.

With the latest versions of FireFox when clicking an app:// link in our site with our app installed, nothing happens.

I've reviewed the firefox source code and found OUT that the app protocol is blocked by default now

AppProtocolHandler.prototype = {

 classID: Components.ID("{b7ad6144-d344-4687-b2d0-b6b9dce1f07f}"),
 QueryInterface: XPCOMUtils.generateQI([Ci.nsIProtocolHandler]),
 scheme: "app",
 defaultPort: -1,
 // Don't allow loading from other protocols, and only from app:// if webapps is granted
 protocolFlags: Ci.nsIProtocolHandler.URI_NOAUTH |
                Ci.nsIProtocolHandler.URI_DANGEROUS_TO_LOAD |
 getAppInfo: function app_phGetAppInfo(aId) {
   if (!this._appInfo[aId]) {
     this._appInfo[aId] = appsService.getAppInfo(aId);
   return this._appInfo[aId];

Is there any way that my app can programatically onblock the app protocol?

All Replies (2)

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May I suggest a search on You may find some helpful information there.

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