diff --git a/src/rosdep2/installers.py b/src/rosdep2/installers.py
index 2f4c1cd1e..72c913061 100644
--- a/src/rosdep2/installers.py
+++ b/src/rosdep2/installers.py
@@ -325,7 +325,7 @@ def __init__(self, detect_fn, supports_depends=False):
         self.detect_fn = detect_fn
         self.supports_depends = supports_depends
         self.as_root = True
-        self.sudo_command = 'sudo -H' if os.geteuid() != 0 else ''
+        self.sudo_command = 'sudo -H' if hasattr(os, 'geteuid') and os.geteuid() != 0 else ''
 
     def elevate_priv(self, cmd):
         """
diff --git a/src/rosdep2/main.py b/src/rosdep2/main.py
index 268fcbdc1..457f3de18 100644
--- a/src/rosdep2/main.py
+++ b/src/rosdep2/main.py
@@ -153,7 +153,10 @@ def rosdep_main(args=None):
     except UsageError as e:
         print(_usage, file=sys.stderr)
         print('ERROR: %s' % (str(e)), file=sys.stderr)
-        sys.exit(os.EX_USAGE)
+        if hasattr(os, 'EX_USAGE'):
+            sys.exit(os.EX_USAGE)
+        else:
+            sys.exit(64)  # EX_USAGE is not available on Windows; EX_USAGE is 64 on Unix
     except RosdepInternalError as e:
         print("""
 ERROR: Rosdep experienced an internal error.
@@ -499,9 +502,9 @@ def _package_args_handler(command, parser, options, args):
     if command in ['install', 'check', 'keys'] and options.ignore_src:
         if options.verbose:
             print('Searching ROS_PACKAGE_PATH for '
-                  'sources: ' + str(os.environ['ROS_PACKAGE_PATH'].split(':')))
+                  'sources: ' + str(os.environ['ROS_PACKAGE_PATH'].split(os.pathsep)))
         ws_pkgs = get_workspace_packages()
-        for path in os.environ['ROS_PACKAGE_PATH'].split(':'):
+        for path in os.environ['ROS_PACKAGE_PATH'].split(os.pathsep):
             path = os.path.abspath(path.strip())
             if os.path.exists(path):
                 pkgs = find_catkin_packages_in(path, options.verbose)
diff --git a/src/rosdep2/platforms/source.py b/src/rosdep2/platforms/source.py
index 862494b72..3ba17fedc 100644
--- a/src/rosdep2/platforms/source.py
+++ b/src/rosdep2/platforms/source.py
@@ -302,6 +302,7 @@ def install_source(resolved):
             rd_debug('Extracting tarball')
             tarf = tarfile.open(filename)
             tarf.extractall(tempdir)
+            tarf.close()
         else:
             rd_debug('Bypassing tarball extraction as it is a dmg')
         rd_debug('Running installation script')
diff --git a/src/rosdep2/shell_utils.py b/src/rosdep2/shell_utils.py
index f0cca1396..8dde39155 100644
--- a/src/rosdep2/shell_utils.py
+++ b/src/rosdep2/shell_utils.py
@@ -84,7 +84,8 @@ def create_tempfile_from_string_and_execute(string_script, path=None, exec_fn=No
 
     result = 1
     try:
-        fh = tempfile.NamedTemporaryFile('w', delete=False)
+        script_ext = '.bat' if os.name == 'nt' else ''
+        fh = tempfile.NamedTemporaryFile('w', suffix=script_ext, delete=False)
         fh.write(string_script)
         fh.close()
         rd_debug('Executing script below with cwd=%s\n{{{\n%s\n}}}\n' % (path, string_script))