diff --git a/packages/plugin-ext/src/hosted/node/hosted-plugin-process.ts b/packages/plugin-ext/src/hosted/node/hosted-plugin-process.ts
index e8cda321abfe3..3814e46676a91 100644
--- a/packages/plugin-ext/src/hosted/node/hosted-plugin-process.ts
+++ b/packages/plugin-ext/src/hosted/node/hosted-plugin-process.ts
@@ -25,6 +25,7 @@ import { RPCProtocolImpl } from '../../api/rpc-protocol';
 import { MAIN_RPC_CONTEXT } from '../../api/plugin-api';
 import { HostedPluginCliContribution } from './hosted-plugin-cli-contribution';
 import {HostedPluginProcessesCache} from './hosted-plugin-processes-cache';
+const psTree = require('ps-tree');
 
 export interface IPCConnectionOptions {
     readonly serverName: string;
@@ -122,11 +123,21 @@ export class HostedPluginProcess implements ServerPluginRunner {
         const hostedPluginManager = rpc.getProxy(MAIN_RPC_CONTEXT.HOSTED_PLUGIN_MANAGER_EXT);
         hostedPluginManager.$stopPlugin('').then(() => {
             emitter.dispose();
-            cp.kill();
+            this.killProcessTree(cp);
         });
 
     }
 
+    private killProcessTree(parentProcess: cp.ChildProcess): void {
+        const parentPid = parentProcess.pid;
+        // tslint:disable-next-line:no-any
+        psTree(parentPid, (err: Error, children: Array<any>) => {
+            parentProcess.kill();
+            // tslint:disable-next-line:no-any
+            cp.spawn('kill', children.map((p: any) => p.PID));
+        });
+    }
+
     public runPluginServer(): void {
         if (this.childProcess) {
             this.terminatePluginServer();