diff --git a/src/vs/workbench/api/common/extHostCodeInsets.ts b/src/vs/workbench/api/common/extHostCodeInsets.ts
index 64650ee5ccf..7902345e471 100644
--- a/src/vs/workbench/api/common/extHostCodeInsets.ts
+++ b/src/vs/workbench/api/common/extHostCodeInsets.ts
@@ -12,7 +12,6 @@ import type * as vscode from 'vscode';
 import { ExtHostEditorInsetsShape, MainThreadEditorInsetsShape } from './extHost.protocol';
 import { asWebviewUri, webviewGenericCspSource, WebviewInitData } from 'vs/workbench/api/common/shared/webview';
 import { generateUuid } from 'vs/base/common/uuid';
-import { Schemas } from 'vs/base/common/network';
 
 export class ExtHostEditorInsets implements ExtHostEditorInsetsShape {
 
@@ -67,7 +66,7 @@ export class ExtHostEditorInsets implements ExtHostEditorInsetsShape {
 			private _options: vscode.WebviewOptions = Object.create(null);
 
 			asWebviewUri(resource: vscode.Uri): vscode.Uri {
-				const remoteAuthority = extension.extensionLocation.scheme === Schemas.vscodeRemote
+				const remoteAuthority = that._initData.remote.isRemote
 					? that._initData.remote.authority
 					: undefined;
 				return asWebviewUri(this._uuid, resource, remoteAuthority);
diff --git a/src/vs/workbench/api/common/extHostNotebookKernels.ts b/src/vs/workbench/api/common/extHostNotebookKernels.ts
index 322707160f4..b57dc5f73a0 100644
--- a/src/vs/workbench/api/common/extHostNotebookKernels.ts
+++ b/src/vs/workbench/api/common/extHostNotebookKernels.ts
@@ -20,7 +20,6 @@ import { CellEditType, IImmediateCellEditOperation, NotebookCellExecutionState,
 import { CancellationTokenSource } from 'vs/base/common/cancellation';
 import { asArray } from 'vs/base/common/arrays';
 import { ILogService } from 'vs/platform/log/common/log';
-import { Schemas } from 'vs/base/common/network';
 
 interface IKernelData {
 	extensionId: ExtensionIdentifier,
@@ -191,7 +190,7 @@ export class ExtHostNotebookKernels implements ExtHostNotebookKernelsShape {
 				return that._proxy.$postMessage(handle, editor && that._extHostNotebook.getIdByEditor(editor), message);
 			},
 			asWebviewUri(uri: URI) {
-				const remoteAuthority = extension.extensionLocation.scheme === Schemas.vscodeRemote
+				const remoteAuthority = that._initData.remote.isRemote
 					? that._initData.remote.authority
 					: undefined;
 				return asWebviewUri(String(handle), uri, remoteAuthority);
diff --git a/src/vs/workbench/api/common/extHostWebview.ts b/src/vs/workbench/api/common/extHostWebview.ts
index ce4ce39d8cb..f3845612563 100644
--- a/src/vs/workbench/api/common/extHostWebview.ts
+++ b/src/vs/workbench/api/common/extHostWebview.ts
@@ -5,7 +5,6 @@
 
 import { VSBuffer } from 'vs/base/common/buffer';
 import { Emitter, Event } from 'vs/base/common/event';
-import { Schemas } from 'vs/base/common/network';
 import { URI } from 'vs/base/common/uri';
 import { IExtensionDescription } from 'vs/platform/extensions/common/extensions';
 import { normalizeVersion, parseVersion } from 'vs/platform/extensions/common/extensionValidator';
@@ -70,7 +69,7 @@ export class ExtHostWebview implements vscode.Webview {
 
 	public asWebviewUri(resource: vscode.Uri): vscode.Uri {
 		this.#hasCalledAsWebviewUri = true;
-		const remoteAuthority = this.#extension.extensionLocation.scheme === Schemas.vscodeRemote
+		const remoteAuthority = this.#initData.remote.isRemote
 			? this.#initData.remote.authority
 			: undefined;
 		return asWebviewUri(this.#handle, resource, remoteAuthority);
diff --git a/src/vs/workbench/api/common/shared/webview.ts b/src/vs/workbench/api/common/shared/webview.ts
index 13ec3d02943..2d26fd0ca52 100644
--- a/src/vs/workbench/api/common/shared/webview.ts
+++ b/src/vs/workbench/api/common/shared/webview.ts
@@ -8,7 +8,10 @@ import { URI } from 'vs/base/common/uri';
 import type * as vscode from 'vscode';
 
 export interface WebviewInitData {
-	readonly remote: { readonly authority: string | undefined };
+	readonly remote: {
+		readonly isRemote: boolean;
+		readonly authority: string | undefined
+	};
 }
 
 /**
diff --git a/src/vs/workbench/test/browser/api/extHostWebview.test.ts b/src/vs/workbench/test/browser/api/extHostWebview.test.ts
index bbdee0feefd..4dd59f11662 100644
--- a/src/vs/workbench/test/browser/api/extHostWebview.test.ts
+++ b/src/vs/workbench/test/browser/api/extHostWebview.test.ts
@@ -31,7 +31,7 @@ suite('ExtHostWebview', () => {
 	test('Cannot register multiple serializers for the same view type', async () => {
 		const viewType = 'view.type';
 
-		const extHostWebviews = new ExtHostWebviews(rpcProtocol!, { remote: { authority: undefined } }, undefined, new NullLogService(), NullApiDeprecationService);
+		const extHostWebviews = new ExtHostWebviews(rpcProtocol!, { remote: { authority: undefined, isRemote: false } }, undefined, new NullLogService(), NullApiDeprecationService);
 
 		const extHostWebviewPanels = new ExtHostWebviewPanels(rpcProtocol!, extHostWebviews, undefined);
 
@@ -123,7 +123,8 @@ suite('ExtHostWebview', () => {
 function createWebview(rpcProtocol: (IExtHostRpcService & IExtHostContext) | undefined, remoteAuthority: string | undefined) {
 	const extHostWebviews = new ExtHostWebviews(rpcProtocol!, {
 		remote: {
-			authority: remoteAuthority
+			authority: remoteAuthority,
+			isRemote: !!remoteAuthority,
 		},
 	}, undefined, new NullLogService(), NullApiDeprecationService);