diff --git a/extensions/notebook/src/jupyter/jupyterServerInstallation.ts b/extensions/notebook/src/jupyter/jupyterServerInstallation.ts
index 63b1b9e1a5..cefeca3b71 100644
--- a/extensions/notebook/src/jupyter/jupyterServerInstallation.ts
+++ b/extensions/notebook/src/jupyter/jupyterServerInstallation.ts
@@ -286,7 +286,7 @@ export default class JupyterServerInstallation {
 	private async installJupyterProsePackage(): Promise<void> {
 		if (process.platform === constants.winPlatform) {
 			let requirements = path.join(this._pythonPackageDir, 'requirements.txt');
-			let installJupyterCommand = `${this._pythonExecutable} -m pip install --no-index -r ${requirements} --find-links ${this._pythonPackageDir} --no-warn-script-location`;
+			let installJupyterCommand = `"${this._pythonExecutable}" -m pip install --no-index -r "${requirements}" --find-links "${this._pythonPackageDir}" --no-warn-script-location`;
 			this.outputChannel.show(true);
 			this.outputChannel.appendLine(localize('msgInstallStart', 'Installing required packages to run Notebooks...'));
 			await utils.executeStreamedCommand(installJupyterCommand, this.outputChannel);
@@ -299,7 +299,7 @@ export default class JupyterServerInstallation {
 	private async installSparkMagic(): Promise<void> {
 		if (process.platform === constants.winPlatform) {
 			let sparkWheel = path.join(this._pythonPackageDir, `sparkmagic-${constants.sparkMagicVersion}-py3-none-any.whl`);
-			let installSparkMagic = `${this._pythonExecutable} -m pip install --no-index ${sparkWheel} --find-links ${this._pythonPackageDir} --no-warn-script-location`;
+			let installSparkMagic = `"${this._pythonExecutable}" -m pip install --no-index "${sparkWheel}" --find-links "${this._pythonPackageDir}" --no-warn-script-location`;
 			this.outputChannel.show(true);
 			this.outputChannel.appendLine(localize('msgInstallingSpark', 'Installing SparkMagic...'));
 			await utils.executeStreamedCommand(installSparkMagic, this.outputChannel);
diff --git a/extensions/notebook/src/jupyter/serverInstance.ts b/extensions/notebook/src/jupyter/serverInstance.ts
index 82a12655ad..cdf7f73e65 100644
--- a/extensions/notebook/src/jupyter/serverInstance.ts
+++ b/extensions/notebook/src/jupyter/serverInstance.ts
@@ -156,7 +156,7 @@ export class PerNotebookServerInstance implements IServerInstance {
 			}
 			if (this.isStarted) {
 				let install = this.options.install;
-				let stopCommand = `${install.pythonExecutable} -m jupyter notebook stop ${this._port}`;
+				let stopCommand = `"${install.pythonExecutable}" -m jupyter notebook stop ${this._port}`;
 				await this.utils.executeBufferedCommand(stopCommand, install.execOptions, install.outputChannel);
 				this._isStarted = false;
 				this.utils.checkProcessDied(this.childProcess);
@@ -236,7 +236,7 @@ export class PerNotebookServerInstance implements IServerInstance {
 		let token = await notebookUtils.getRandomToken();
 		this._uri = vscode.Uri.parse(`http://localhost:${port}/?token=${token}`);
 		this._port = port.toString();
-		let startCommand = `${this.options.install.pythonExecutable} -m jupyter notebook --no-browser --notebook-dir "${notebookDirectory}" --port=${port} --NotebookApp.token=${token}`;
+		let startCommand = `"${this.options.install.pythonExecutable}" -m jupyter notebook --no-browser --notebook-dir "${notebookDirectory}" --port=${port} --NotebookApp.token=${token}`;
 		this.notifyStarting(this.options.install, startCommand);
 
 		// Execute the command