diff --git a/extensions/simple-browser/src/extension.ts b/extensions/simple-browser/src/extension.ts
index cf2b7863c3a..1831c7c638c 100644
--- a/extensions/simple-browser/src/extension.ts
+++ b/extensions/simple-browser/src/extension.ts
@@ -16,7 +16,16 @@ const showCommand = 'simpleBrowser.show';
 
 const enabledHosts = new Set<string>([
 	'localhost',
-	'127.0.0.1'
+	// localhost IPv4
+	'127.0.0.1',
+	// localhost IPv6
+	'0:0:0:0:0:0:0:1',
+	'::1',
+	// all interfaces IPv4
+	'0.0.0.0',
+	// all interfaces IPv6
+	'0:0:0:0:0:0:0:0',
+	'::'
 ]);
 
 const openerId = 'simpleBrowser.open';
diff --git a/src/vs/workbench/contrib/externalUriOpener/common/externalUriOpenerService.ts b/src/vs/workbench/contrib/externalUriOpener/common/externalUriOpenerService.ts
index ad371f4fb0b..6ba9cfa61d3 100644
--- a/src/vs/workbench/contrib/externalUriOpener/common/externalUriOpenerService.ts
+++ b/src/vs/workbench/contrib/externalUriOpener/common/externalUriOpenerService.ts
@@ -108,7 +108,7 @@ export class ExternalUriOpenerService extends Disposable implements IExternalUri
 		await Promise.all(Array.from(allOpeners.values()).map(async opener => {
 			let priority: modes.ExternalUriOpenerPriority;
 			try {
-				priority = await opener.canOpen(targetUri, token);
+				priority = await opener.canOpen(ctx.sourceUri, token);
 			} catch (e) {
 				this.logService.error(e);
 				return;