Path already has a colon

src/vs/platform/windows/electron-main/windowsService.ts

@@ -274,11 +274,14 @@ export class WindowsService implements IWindowsService, IDisposable {
 	private parseURIForOpen(uri: URI): string {
 		if (uri.authority === 'file') {
 			let path = uri.path.substr(1);
-			if (path.slice(0, path.indexOf('/')).length === 1) { // add a colon if the uri.path contains a valid drive letter.
+			let drive = path.slice(0, path.indexOf('/'));
+			if (drive.length === 1) { // add a colon if the uri.path contains a valid drive letter.
 				path = path.slice(0, path.indexOf('/')) + ':' + path.slice(path.indexOf('/'));
 				return path;
 			}
-
+			if (drive.length === 2 && drive.indexOf(':')) { // path has a colon already
+				return path;
+			}
 			return uri.path;
 		}
 		return uri.path;