diff --git a/autoload/dpp/util.vim b/autoload/dpp/util.vim
index 204dd65..891c405 100644
--- a/autoload/dpp/util.vim
+++ b/autoload/dpp/util.vim
@@ -97,15 +97,12 @@ function dpp#util#_execute_hook(plugin, hook_name, hook) abort
   endif
 
   try
-    if a:hook->type() == v:t_string
-      let cmds = a:hook->split('\n')
-      if !(cmds->empty()) && cmds[0] =~# '^\s*vim9script' && exists(':vim9')
-        vim9 call execute(cmds[1 : ], '')
-      else
-        call execute(cmds, '')
-      endif
+    " NOTE: hook may contain \r in Windows
+    const cmds = a:hook->split('\r\?\n')
+    if !(cmds->empty()) && cmds[0] =~# '^\s*vim9script' && exists(':vim9')
+      vim9 call execute(cmds[1 : ], '')
     else
-      call call(a:hook, [])
+      call execute(cmds, '')
     endif
 
     let a:plugin.called[string(a:hook)] = v:true
@@ -249,7 +246,7 @@ endfunction
 function dpp#util#_dos2unix(path) abort
   call writefile(
         \   readfile(a:path)
-        \     ->map({ _, val -> val->substitute("\r", '', 'g')}),
+        \     ->map({ _, val -> val->substitute('\r', '', 'g')}),
         \   a:path
         \ )
 endfunction
diff --git a/denops/dpp/dpp.ts b/denops/dpp/dpp.ts
index ff56c67..0b82640 100644
--- a/denops/dpp/dpp.ts
+++ b/denops/dpp/dpp.ts
@@ -4,6 +4,7 @@ import {
   Denops,
   dirname,
   extname,
+  fn,
   is,
   join,
   vars,
@@ -115,6 +116,8 @@ export class Dpp {
     name: string,
     configReturn: ConfigReturn,
   ) {
+    const hasWindows = await fn.has(denops, "win32");
+
     // Initialize plugins
     const protocols = await this.getProtocols(denops, options);
     const recordPlugins: Record<string, Plugin> = {};
@@ -375,7 +378,9 @@ export class Dpp {
     // Write state file
     const stateFile = `${basePath}/${name}/state.vim`;
     await Deno.writeTextFile(stateFile, stateLines.join("\n"));
-    await denops.call("dpp#util#_dos2unix", stateFile);
+    if (hasWindows) {
+      await denops.call("dpp#util#_dos2unix", stateFile);
+    }
 
     const cacheFile = `${basePath}/${name}/cache.vim`;
     const cacheLines = [
@@ -387,7 +392,9 @@ export class Dpp {
       ]),
     ];
     await Deno.writeTextFile(cacheFile, cacheLines.join("\n"));
-    await denops.call("dpp#util#_dos2unix", cacheFile);
+    if (hasWindows) {
+      await denops.call("dpp#util#_dos2unix", cacheFile);
+    }
 
     //console.log(stateLines);
     //console.log(cacheLines);
@@ -409,7 +416,9 @@ export class Dpp {
         }
 
         await Deno.writeTextFile(path, generatedFtplugins[path].join("\n"));
-        await denops.call("dpp#util#_dos2unix", path);
+        if (hasWindows) {
+          await denops.call("dpp#util#_dos2unix", path);
+        }
       }
     }
 
diff --git a/denops/dpp/utils.ts b/denops/dpp/utils.ts
index 1c67d39..1cb3538 100644
--- a/denops/dpp/utils.ts
+++ b/denops/dpp/utils.ts
@@ -34,7 +34,11 @@ export function convert2List<T>(expr: T | T[] | undefined): T[] {
   return !expr ? [] : is.Array(expr) ? expr : [expr];
 }
 
-export async function isDirectory(path: string) {
+export async function isDirectory(path: string | undefined) {
+  if (!path) {
+    return false;
+  }
+
   // NOTE: Deno.stat() may be failed
   try {
     if ((await Deno.stat(path)).isDirectory) {