diff --git a/src/extensions/extension-installer.ts b/src/extensions/extension-installer.ts
index 04b78bbe1a..82a26f8af8 100644
--- a/src/extensions/extension-installer.ts
+++ b/src/extensions/extension-installer.ts
@@ -43,9 +43,9 @@ export class ExtensionInstaller {
         mode: 0o600
       });
 
-      logger.info(`${logModule} installing dependencies at ${extensionPackagesRoot()}`);
+      logger.info(`${logModule}: installing dependencies at ${this.extensionPackagesRoot}`);
       await this.npm(["install", "--no-audit", "--only=prod", "--prefer-offline", "--no-package-lock"]);
-      logger.info(`${logModule} dependencies installed at ${extensionPackagesRoot()}`);
+      logger.info(`${logModule}: dependencies installed at ${this.extensionPackagesRoot}`);
     } finally {
       this.installLock.release();
     }
@@ -59,9 +59,9 @@ export class ExtensionInstaller {
     await this.installLock.acquireAsync();
 
     try {
-      logger.info(`${logModule} installing package from ${name} to ${extensionPackagesRoot()}`);
+      logger.info(`${logModule}: installing package from ${name} to ${this.extensionPackagesRoot}`);
       await this.npm(["install", "--no-audit", "--only=prod", "--prefer-offline", "--no-package-lock", "--no-save", name]);
-      logger.info(`${logModule} package ${name} installed to ${extensionPackagesRoot()}`);
+      logger.info(`${logModule}: package ${name} installed to ${this.extensionPackagesRoot}`);
     } finally {
       this.installLock.release();
     }
@@ -70,7 +70,7 @@ export class ExtensionInstaller {
   private npm(args: string[]): Promise<void> {
     return new Promise((resolve, reject) => {
       const child = child_process.fork(this.npmPath, args, {
-        cwd: extensionPackagesRoot(),
+        cwd: this.extensionPackagesRoot,
         silent: true,
         env: {}
       });
diff --git a/src/extensions/extension-loader.ts b/src/extensions/extension-loader.ts
index 98697d252c..7f78d3bdaf 100644
--- a/src/extensions/extension-loader.ts
+++ b/src/extensions/extension-loader.ts
@@ -13,6 +13,7 @@ import type { LensMainExtension } from "./lens-main-extension";
 import type { LensRendererExtension } from "./lens-renderer-extension";
 import * as registries from "./registries";
 import fs from "fs";
+import { delay } from "../common/utils";
 
 // lazy load so that we get correct userData
 export function extensionPackagesRoot() {
@@ -87,7 +88,7 @@ export class ExtensionLoader {
     this.extensions.set(extension.id, extension);
   }
 
-  removeInstance(lensExtensionId: LensExtensionId) {
+  async removeInstance(lensExtensionId: LensExtensionId) {
     logger.info(`${logModule} deleting extension instance ${lensExtensionId}`);
     const instance = this.instances.get(lensExtensionId);
 
@@ -96,13 +97,12 @@ export class ExtensionLoader {
     }
 
     try {
-      instance.disable();
+      await Promise.race([instance.disable(), delay(15 * 1000)]); // allow at most 15s to disable the instace
       this.events.emit("remove", instance);
       this.instances.delete(lensExtensionId);
     } catch (error) {
       logger.error(`${logModule}: deactivation extension error`, { lensExtensionId, error });
     }
-
   }
 
   removeExtension(lensExtensionId: LensExtensionId) {
diff --git a/src/extensions/lens-extension.ts b/src/extensions/lens-extension.ts
index aaa6f60ac5..31d97e9acd 100644
--- a/src/extensions/lens-extension.ts
+++ b/src/extensions/lens-extension.ts
@@ -57,7 +57,7 @@ export class LensExtension {
   async enable() {
     if (this.isEnabled) return;
     this.isEnabled = true;
-    this.onActivate();
+    await this.onActivate();
     logger.info(`[EXTENSION]: enabled ${this.name}@${this.version}`);
   }
 
@@ -65,7 +65,7 @@ export class LensExtension {
   async disable() {
     if (!this.isEnabled) return;
     this.isEnabled = false;
-    this.onDeactivate();
+    await this.onDeactivate();
     logger.info(`[EXTENSION]: disabled ${this.name}@${this.version}`);
   }
 
@@ -101,11 +101,11 @@ export class LensExtension {
     };
   }
 
-  protected onActivate() {
+  protected onActivate(): Promise<void> | void {
     // mock
   }
 
-  protected onDeactivate() {
+  protected onDeactivate(): Promise<void> | void {
     // mock
   }
 }
diff --git a/src/main/helm/helm-chart-manager.ts b/src/main/helm/helm-chart-manager.ts
index 69619a56d4..8aa08d7830 100644
--- a/src/main/helm/helm-chart-manager.ts
+++ b/src/main/helm/helm-chart-manager.ts
@@ -12,11 +12,9 @@ type CachedYaml = {
 
 export class HelmChartManager {
   protected cache: any = {};
-  protected repo: HelmRepo;
 
-  constructor(repo: HelmRepo){
+  constructor(protected repo: HelmRepo){
     this.cache = HelmRepoManager.cache;
-    this.repo = repo;
   }
 
   public async chart(name: string) {
diff --git a/src/renderer/components/+extensions/extensions.tsx b/src/renderer/components/+extensions/extensions.tsx
index 67f0837034..8425bd934a 100644
--- a/src/renderer/components/+extensions/extensions.tsx
+++ b/src/renderer/components/+extensions/extensions.tsx
@@ -46,6 +46,10 @@ function parseLensExtensionManifest(buf: Buffer): LensExtensionManifest {
   return raw;
 }
 
+function notifyOnAction(displayName: string, action: string): void {
+  Notifications.ok(<p>Extension <b>{displayName}</b> successfully {action}!</p>);
+}
+
 @observer
 export class Extensions extends React.Component {
   private static supportedFormats = ["tar", "tgz"];
@@ -95,9 +99,7 @@ export class Extensions extends React.Component {
     disposeOnUnmount(this,
       reaction(() => this.extensions, () => {
         this.removedUninstalling.forEach(({ id, displayName }) => {
-          Notifications.ok(
-            <p>Extension <b>{displayName}</b> successfully uninstalled!</p>
-          );
+          notifyOnAction(displayName, "uninstalled");
           this.extensionStateStore.extensionState.delete(id);
         });
 
@@ -108,9 +110,7 @@ export class Extensions extends React.Component {
             throw new Error("Extension not found");
           }
 
-          Notifications.ok(
-            <p>Extension <b>{displayName}</b> successfully installed!</p>
-          );
+          notifyOnAction(displayName, "installed");
           this.extensionStateStore.extensionState.delete(id);
           this.installPath = "";
 
@@ -205,39 +205,36 @@ export class Extensions extends React.Component {
     );
   };
 
-  async preloadExtensions(requests: InstallRequest[], { showError = true } = {}) {
-    const preloadedRequests = requests.filter(request => request.data);
+  async preloadExtensions(requests: InstallRequest[], { showError = true } = {}): Promise<InstallRequestPreloaded[]> {
+    const res = await Promise.all(
+      requests.map(async ({ data, fileName, filePath }) => {
+        if (data) {
+          return { data, fileName, filePath };
+        }
 
-    await Promise.all(
-      requests
-        .filter(request => !request.data && request.filePath)
-        .map(async request => {
+        if (filePath) {
           try {
-            const data = await fse.readFile(request.filePath);
-
-            request.data = data;
-            preloadedRequests.push(request);
-
-            return request;
+            return { data: await fse.readFile(filePath), fileName, filePath };
           } catch(error) {
             if (showError) {
-              Notifications.error(`Error while reading "${request.filePath}": ${String(error)}`);
+              Notifications.error(`Error while reading "${filePath}": ${String(error)}`);
             }
           }
-        })
+        }
+      })
     );
 
-    return preloadedRequests as InstallRequestPreloaded[];
+    return res.filter(Boolean);
   }
 
   async validatePackage(filePath: string): Promise<LensExtensionManifest> {
     const tarFiles = await listTarEntries(filePath);
 
     // tarball from npm contains single root folder "package/*"
-    const firstFile = tarFiles[0];
+    const [firstFile] = tarFiles;
 
     if (!firstFile) {
-      throw new Error(`invalid extension bundle,  ${manifestFilename} not found`);
+      throw new Error(`invalid extension bundle, ${manifestFilename} not found`);
     }
 
     const rootFolder = path.normalize(firstFile).split(path.sep)[0];
@@ -255,7 +252,7 @@ export class Extensions extends React.Component {
     });
 
     if (!manifest.lens && !manifest.renderer) {
-      throw new Error(`${manifestFilename} must specify "main" and/or "renderer" fields`);
+      throw new Error(`${manifestFilename} must specify at least one of: ["main", "renderer"]`);
     }
 
     return manifest;
@@ -267,11 +264,9 @@ export class Extensions extends React.Component {
     // copy files to temp
     await fse.ensureDir(this.getExtensionPackageTemp());
 
-    for (const request of requests) {
-      const tempFile = this.getExtensionPackageTemp(request.fileName);
-
-      await fse.writeFile(tempFile, request.data);
-    }
+    await Promise.all(
+      requests.map(request => fse.writeFile(this.getExtensionPackageTemp(request.fileName), request.data))
+    );
 
     // validate packages
     await Promise.all(