diff --git a/experimental/CHANGELOG.md b/experimental/CHANGELOG.md
index 11e98847da..bc0fb011da 100644
--- a/experimental/CHANGELOG.md
+++ b/experimental/CHANGELOG.md
@@ -21,6 +21,8 @@ All notable changes to experimental packages in this project will be documented
 
 ### :bug: (Bug Fix)
 
+* fix(otlp-exporter-base): replaced usage of window with _globalThis [#4157](https://github.com/open-telemetry/opentelemetry-js/pull/4157) @cristianmadularu
+
 ### :books: (Refine Doc)
 
 ### :house: (Internal)
diff --git a/experimental/packages/otlp-exporter-base/src/platform/browser/OTLPExporterBrowserBase.ts b/experimental/packages/otlp-exporter-base/src/platform/browser/OTLPExporterBrowserBase.ts
index 2888e317df..dbe02b222d 100644
--- a/experimental/packages/otlp-exporter-base/src/platform/browser/OTLPExporterBrowserBase.ts
+++ b/experimental/packages/otlp-exporter-base/src/platform/browser/OTLPExporterBrowserBase.ts
@@ -20,7 +20,7 @@ import * as otlpTypes from '../../types';
 import { parseHeaders } from '../../util';
 import { sendWithBeacon, sendWithXhr } from './util';
 import { diag } from '@opentelemetry/api';
-import { getEnv, baggageUtils } from '@opentelemetry/core';
+import { getEnv, baggageUtils, _globalThis } from '@opentelemetry/core';
 
 /**
  * Collector Metric Exporter abstract base class
@@ -53,11 +53,11 @@ export abstract class OTLPExporterBrowserBase<
   }
 
   onInit(): void {
-    window.addEventListener('unload', this.shutdown);
+    _globalThis.addEventListener('unload', this.shutdown);
   }
 
   onShutdown(): void {
-    window.removeEventListener('unload', this.shutdown);
+    _globalThis.removeEventListener('unload', this.shutdown);
   }
 
   send(