diff --git a/packages/electron-chrome-extensions/README.md b/packages/electron-chrome-extensions/README.md
index 3df36325..2fb9f8b8 100644
--- a/packages/electron-chrome-extensions/README.md
+++ b/packages/electron-chrome-extensions/README.md
@@ -20,6 +20,9 @@ npm install electron-chrome-extensions
 
 ## Usage
 
+> [!IMPORTANT]  
+> You must initialize the `ElectronChromeExtensions` class before installing any extensions, otherwise it might not work as expected.
+
 ### Basic
 
 Simple browser using Electron's [default session](https://www.electronjs.org/docs/api/session#sessiondefaultsession) and one tab.
@@ -134,6 +137,7 @@ module.exports = {
      Valid options include `GPL-3.0`, `Patron-License-2020-11-19`
   - `session` Electron.Session (optional) - Session which should support
     Chrome extension APIs. `session.defaultSession` is used by default.
+  - `registerCrxProtocolInDefaultSession` Boolean (optional) - Whether to register the 'crx://' protocol in the default session. Defaults to `true`.
   - `createTab(details) => Promise<[Electron.WebContents, Electron.BrowserWindow]>` (optional) -
     Called when `chrome.tabs.create` is invoked by an extension. Allows the
     application to handle how tabs are created.
@@ -211,6 +215,14 @@ Example:
 }
 ```
 
+##### `extensions.handleCrxRequest(request)`
+
+- `request` GlobalRequest
+
+Handle a request to the 'crx://' protocol.
+
+Returns `GlobalResponse`
+
 #### Instance Events
 
 ##### Event: 'browser-action-popup-created'
diff --git a/packages/electron-chrome-extensions/src/browser/index.ts b/packages/electron-chrome-extensions/src/browser/index.ts
index d2e60c6b..8a14b1be 100644
--- a/packages/electron-chrome-extensions/src/browser/index.ts
+++ b/packages/electron-chrome-extensions/src/browser/index.ts
@@ -74,6 +74,12 @@ export interface ChromeExtensionOptions extends ChromeExtensionImpl {
    * @deprecated See "Packaging the preload script" in the readme.
    */
   modulePath?: string
+
+  /**
+   * Whether to register the 'crx://' protocol in the default session.
+   * Defaults to `true`.
+   */
+  registerCrxProtocolInDefaultSession?: boolean
 }
 
 const sessionMap = new WeakMap<Electron.Session, ElectronChromeExtensions>()
@@ -143,7 +149,10 @@ export class ElectronChromeExtensions extends EventEmitter {
     this.prependPreload(opts.modulePath)
 
     // Register crx:// protocol in default session for convenience
-    if (this.ctx.session !== electronSession.defaultSession) {
+    if (
+      opts.registerCrxProtocolInDefaultSession !== false &&
+      this.ctx.session !== electronSession.defaultSession
+    ) {
       this.handleCRXProtocol(electronSession.defaultSession)
     }
   }