diff --git a/src/server/typingsInstaller/nodeTypingsInstaller.ts b/src/server/typingsInstaller/nodeTypingsInstaller.ts
index d3261a7ebdf7f..3ebdbd28de496 100644
--- a/src/server/typingsInstaller/nodeTypingsInstaller.ts
+++ b/src/server/typingsInstaller/nodeTypingsInstaller.ts
@@ -85,6 +85,11 @@ namespace ts.server.typingsInstaller {
                 throttleLimit,
                 log);
             this.npmPath = npmLocation !== undefined ? npmLocation : getDefaultNPMLocation(process.argv[0]);
+
+            // If the NPM path contains spaces and isn't wrapped in quotes, do so.
+            if (this.npmPath.indexOf(" ") !== -1 && this.npmPath[0] != `"`) {
+                this.npmPath = `"${this.npmPath}"`;
+            }
             if (this.log.isEnabled()) {
                 this.log.writeLine(`Process id: ${process.pid}`);
                 this.log.writeLine(`NPM location: ${this.npmPath} (explicit '${Arguments.NpmLocation}' ${npmLocation === undefined ? "not " : ""} provided)`);
@@ -183,4 +188,4 @@ namespace ts.server.typingsInstaller {
     });
     const installer = new NodeTypingsInstaller(globalTypingsCacheLocation, typingSafeListLocation, npmLocation, /*throttleLimit*/5, log);
     installer.listen();
-}
\ No newline at end of file
+}