diff --git a/extensions/github-authentication/package.json b/extensions/github-authentication/package.json
index 787b4d17497..c4189e6b7eb 100644
--- a/extensions/github-authentication/package.json
+++ b/extensions/github-authentication/package.json
@@ -11,11 +11,6 @@
   "categories": [
     "Other"
   ],
-  "extensionKind": [
-    "ui",
-    "workspace",
-    "web"
-  ],
   "activationEvents": [
     "*",
     "onAuthenticationRequest:github"
diff --git a/src/vs/workbench/api/browser/mainThreadAuthentication.ts b/src/vs/workbench/api/browser/mainThreadAuthentication.ts
index e4fde65fb10..7a9e0fc6a64 100644
--- a/src/vs/workbench/api/browser/mainThreadAuthentication.ts
+++ b/src/vs/workbench/api/browser/mainThreadAuthentication.ts
@@ -249,7 +249,7 @@ export class MainThreadAuthentication extends Disposable implements MainThreadAu
 	}
 
 	$ensureProvider(id: string): Promise<void> {
-		return this.extensionService.activateByEvent(getAuthenticationProviderActivationEvent(id), true);
+		return this.extensionService.activateByEvent(getAuthenticationProviderActivationEvent(id));
 	}
 
 	$sendDidChangeSessions(id: string, event: modes.AuthenticationSessionsChangeEvent): void {
diff --git a/src/vs/workbench/api/common/extHost.protocol.ts b/src/vs/workbench/api/common/extHost.protocol.ts
index 9f0c4e55065..e09f81490e8 100644
--- a/src/vs/workbench/api/common/extHost.protocol.ts
+++ b/src/vs/workbench/api/common/extHost.protocol.ts
@@ -1074,7 +1074,7 @@ export type IResolveAuthorityResult = IResolveAuthorityErrorResult | IResolveAut
 export interface ExtHostExtensionServiceShape {
 	$resolveAuthority(remoteAuthority: string, resolveAttempt: number): Promise<IResolveAuthorityResult>;
 	$startExtensionHost(enabledExtensionIds: ExtensionIdentifier[]): Promise<void>;
-	$activateByEvent(activationEvent: string, eager?: boolean): Promise<void>;
+	$activateByEvent(activationEvent: string): Promise<void>;
 	$activate(extensionId: ExtensionIdentifier, reason: ExtensionActivationReason): Promise<boolean>;
 	$setRemoteEnvironment(env: { [key: string]: string | null; }): Promise<void>;
 	$updateRemoteConnectionData(connectionData: IRemoteConnectionData): Promise<void>;
diff --git a/src/vs/workbench/api/common/extHostExtensionService.ts b/src/vs/workbench/api/common/extHostExtensionService.ts
index 0653b623ba0..6c5dcf97dad 100644
--- a/src/vs/workbench/api/common/extHostExtensionService.ts
+++ b/src/vs/workbench/api/common/extHostExtensionService.ts
@@ -686,11 +686,7 @@ export abstract class AbstractExtHostExtensionService extends Disposable impleme
 		return this._startExtensionHost();
 	}
 
-	public $activateByEvent(activationEvent: string, eager: boolean = true): Promise<void> {
-		if (eager) {
-			return this._activateByEvent(activationEvent, false);
-		}
-
+	public $activateByEvent(activationEvent: string): Promise<void> {
 		return (
 			this._readyToRunExtensions.wait()
 				.then(_ => this._activateByEvent(activationEvent, false))
diff --git a/src/vs/workbench/services/extensions/common/abstractExtensionService.ts b/src/vs/workbench/services/extensions/common/abstractExtensionService.ts
index 2bd2b6a3282..446f74eff84 100644
--- a/src/vs/workbench/services/extensions/common/abstractExtensionService.ts
+++ b/src/vs/workbench/services/extensions/common/abstractExtensionService.ts
@@ -186,7 +186,7 @@ export abstract class AbstractExtensionService extends Disposable implements IEx
 		this._startExtensionHosts(false, Array.from(this._allRequestedActivateEvents.keys()));
 	}
 
-	public activateByEvent(activationEvent: string, eager?: boolean): Promise<void> {
+	public activateByEvent(activationEvent: string): Promise<void> {
 		if (this._installedExtensionsReady.isOpen()) {
 			// Extensions have been scanned and interpreted
 
@@ -205,17 +205,13 @@ export abstract class AbstractExtensionService extends Disposable implements IEx
 			// Record the fact that this activationEvent was requested (in case of a restart)
 			this._allRequestedActivateEvents.add(activationEvent);
 
-			if (eager) {
-				return this._activateByEvent(activationEvent, eager);
-			}
-
 			return this._installedExtensionsReady.wait().then(() => this._activateByEvent(activationEvent));
 		}
 	}
 
-	private _activateByEvent(activationEvent: string, eager?: boolean): Promise<void> {
+	private _activateByEvent(activationEvent: string): Promise<void> {
 		const result = Promise.all(
-			this._extensionHostManagers.map(extHostManager => extHostManager.activateByEvent(activationEvent, eager))
+			this._extensionHostManagers.map(extHostManager => extHostManager.activateByEvent(activationEvent))
 		).then(() => { });
 		this._onWillActivateByEvent.fire({
 			event: activationEvent,
diff --git a/src/vs/workbench/services/extensions/common/extensionHostManager.ts b/src/vs/workbench/services/extensions/common/extensionHostManager.ts
index e3f7f0c117a..484444e968d 100644
--- a/src/vs/workbench/services/extensions/common/extensionHostManager.ts
+++ b/src/vs/workbench/services/extensions/common/extensionHostManager.ts
@@ -48,7 +48,6 @@ export class ExtensionHostManager extends Disposable {
 	 */
 	private _proxy: Promise<{ value: ExtHostExtensionServiceShape; } | null> | null;
 	private _resolveAuthorityAttempt: number;
-	private _hasStarted = false;
 
 	constructor(
 		extensionHost: IExtensionHost,
@@ -66,7 +65,6 @@ export class ExtensionHostManager extends Disposable {
 		this.onDidExit = this._extensionHost.onExit;
 		this._proxy = this._extensionHost.start()!.then(
 			(protocol) => {
-				this._hasStarted = true;
 				return { value: this._createExtensionHostCustomers(protocol) };
 			},
 			(err) => {
@@ -219,18 +217,14 @@ export class ExtensionHostManager extends Disposable {
 		return proxy.$activate(extension, reason);
 	}
 
-	public activateByEvent(activationEvent: string, eager?: boolean): Promise<void> {
-		if (eager && !this._hasStarted) {
-			return Promise.resolve();
-		}
-
+	public activateByEvent(activationEvent: string): Promise<void> {
 		if (!this._cachedActivationEvents.has(activationEvent)) {
-			this._cachedActivationEvents.set(activationEvent, this._activateByEvent(activationEvent, eager));
+			this._cachedActivationEvents.set(activationEvent, this._activateByEvent(activationEvent));
 		}
 		return this._cachedActivationEvents.get(activationEvent)!;
 	}
 
-	private async _activateByEvent(activationEvent: string, eager?: boolean): Promise<void> {
+	private async _activateByEvent(activationEvent: string): Promise<void> {
 		if (!this._proxy) {
 			return;
 		}
@@ -240,7 +234,7 @@ export class ExtensionHostManager extends Disposable {
 			// i.e. the extension host could not be started
 			return;
 		}
-		return proxy.value.$activateByEvent(activationEvent, eager);
+		return proxy.value.$activateByEvent(activationEvent);
 	}
 
 	public async getInspectPort(tryEnableInspector: boolean): Promise<number> {
diff --git a/src/vs/workbench/services/extensions/common/extensions.ts b/src/vs/workbench/services/extensions/common/extensions.ts
index f0980b0405c..652a2603156 100644
--- a/src/vs/workbench/services/extensions/common/extensions.ts
+++ b/src/vs/workbench/services/extensions/common/extensions.ts
@@ -177,13 +177,8 @@ export interface IExtensionService {
 
 	/**
 	 * Send an activation event and activate interested extensions.
-	 *
-	 * Normally, this will queue the activation event if the extension hosts are not ready
-	 * and send it to all of them. If the extension needs to be activated before this,
-	 * the eager flag can be used to ignore extension hosts that aren't yet started. Do not
-	 * use this flag unless necessary.
 	 */
-	activateByEvent(activationEvent: string, eager?: boolean): Promise<void>;
+	activateByEvent(activationEvent: string): Promise<void>;
 
 	/**
 	 * An promise that resolves when the installed extensions are registered after