diff --git a/packages/browser/src/sdk.ts b/packages/browser/src/sdk.ts
index 4dd323c6aa02..1421814ae9e5 100644
--- a/packages/browser/src/sdk.ts
+++ b/packages/browser/src/sdk.ts
@@ -72,7 +72,12 @@ type Runtime = {
 };
 
 function shouldShowBrowserExtensionError(): boolean {
-  const windowWithMaybeExtension = WINDOW as typeof WINDOW & ExtensionProperties;
+  const windowWithMaybeExtension =
+    typeof WINDOW.window !== 'undefined' && (WINDOW as typeof WINDOW & ExtensionProperties);
+  if (!windowWithMaybeExtension) {
+    // No need to show the error if we're not in a browser window environment (e.g. service workers)
+    return false;
+  }
 
   const extensionKey = windowWithMaybeExtension.chrome ? 'chrome' : 'browser';
   const extensionObject = windowWithMaybeExtension[extensionKey];
diff --git a/packages/browser/test/sdk.test.ts b/packages/browser/test/sdk.test.ts
index 31178bc84423..80e54e3d49d2 100644
--- a/packages/browser/test/sdk.test.ts
+++ b/packages/browser/test/sdk.test.ts
@@ -149,6 +149,7 @@ describe('init', () => {
       Object.defineProperty(WINDOW, 'chrome', { value: undefined, writable: true });
       Object.defineProperty(WINDOW, 'browser', { value: undefined, writable: true });
       Object.defineProperty(WINDOW, 'nw', { value: undefined, writable: true });
+      Object.defineProperty(WINDOW, 'window', { value: WINDOW, writable: true });
     });
 
     it('logs a browser extension error if executed inside a Chrome extension', () => {
@@ -229,6 +230,18 @@ describe('init', () => {
       consoleErrorSpy.mockRestore();
     });
 
+    it("doesn't log a browser extension error if the `window` object isn't defined", () => {
+      const consoleErrorSpy = vi.spyOn(console, 'error').mockImplementation(() => {});
+
+      Object.defineProperty(WINDOW, 'window', { value: undefined });
+
+      init(options);
+
+      expect(consoleErrorSpy).not.toHaveBeenCalled();
+
+      consoleErrorSpy.mockRestore();
+    });
+
     it("doesn't return a client on initialization error", () => {
       const consoleErrorSpy = vi.spyOn(console, 'error').mockImplementation(() => {});