diff --git a/src/hooks/claude-code-hooks/plugin-config.ts b/src/hooks/claude-code-hooks/plugin-config.ts
index d0c4836..dc935a9 100644
--- a/src/hooks/claude-code-hooks/plugin-config.ts
+++ b/src/hooks/claude-code-hooks/plugin-config.ts
@@ -3,7 +3,10 @@
  * Contains settings for hook command execution (zsh, etc.)
  */
 
+const isWindows = process.platform === "win32"
+
 export const DEFAULT_CONFIG = {
-  forceZsh: true,
+  // Windows doesn't have zsh by default, so we disable forceZsh on Windows
+  forceZsh: !isWindows,
   zshPath: "/bin/zsh",
 }
diff --git a/src/hooks/comment-checker/cli.ts b/src/hooks/comment-checker/cli.ts
index fb39693..245a135 100644
--- a/src/hooks/comment-checker/cli.ts
+++ b/src/hooks/comment-checker/cli.ts
@@ -3,10 +3,11 @@ import { createRequire } from "module"
 import { dirname, join } from "path"
 import { existsSync } from "fs"
 import * as fs from "fs"
+import { tmpdir } from "os"
 import { getCachedBinaryPath, ensureCommentCheckerBinary } from "./downloader"
 
 const DEBUG = process.env.COMMENT_CHECKER_DEBUG === "1"
-const DEBUG_FILE = "/tmp/comment-checker-debug.log"
+const DEBUG_FILE = join(tmpdir(), "comment-checker-debug.log")
 
 function debugLog(...args: unknown[]) {
   if (DEBUG) {
diff --git a/src/hooks/comment-checker/downloader.ts b/src/hooks/comment-checker/downloader.ts
index 2463afe..81646a4 100644
--- a/src/hooks/comment-checker/downloader.ts
+++ b/src/hooks/comment-checker/downloader.ts
@@ -1,11 +1,11 @@
 import { spawn } from "bun"
 import { existsSync, mkdirSync, chmodSync, unlinkSync, appendFileSync } from "fs"
 import { join } from "path"
-import { homedir } from "os"
+import { homedir, tmpdir } from "os"
 import { createRequire } from "module"
 
 const DEBUG = process.env.COMMENT_CHECKER_DEBUG === "1"
-const DEBUG_FILE = "/tmp/comment-checker-debug.log"
+const DEBUG_FILE = join(tmpdir(), "comment-checker-debug.log")
 
 function debugLog(...args: unknown[]) {
   if (DEBUG) {
diff --git a/src/hooks/comment-checker/index.ts b/src/hooks/comment-checker/index.ts
index 724f274..033d4b9 100644
--- a/src/hooks/comment-checker/index.ts
+++ b/src/hooks/comment-checker/index.ts
@@ -3,9 +3,11 @@ import { runCommentChecker, getCommentCheckerPath, startBackgroundInit, type Hoo
 
 import * as fs from "fs"
 import { existsSync } from "fs"
+import { tmpdir } from "os"
+import { join } from "path"
 
 const DEBUG = process.env.COMMENT_CHECKER_DEBUG === "1"
-const DEBUG_FILE = "/tmp/comment-checker-debug.log"
+const DEBUG_FILE = join(tmpdir(), "comment-checker-debug.log")
 
 function debugLog(...args: unknown[]) {
   if (DEBUG) {
diff --git a/src/shared/command-executor.ts b/src/shared/command-executor.ts
index 060eace..b95c83a 100644
--- a/src/shared/command-executor.ts
+++ b/src/shared/command-executor.ts
@@ -2,9 +2,14 @@ import { spawn } from "child_process"
 import { exec } from "child_process"
 import { promisify } from "util"
 import { existsSync } from "fs"
+import { homedir } from "os"
 
 const DEFAULT_ZSH_PATHS = ["/bin/zsh", "/usr/bin/zsh", "/usr/local/bin/zsh"]
 
+function getHomeDir(): string {
+  return process.env.HOME || process.env.USERPROFILE || homedir()
+}
+
 function findZshPath(customZshPath?: string): string | null {
   if (customZshPath && existsSync(customZshPath)) {
     return customZshPath
@@ -39,7 +44,7 @@ export async function executeHookCommand(
   cwd: string,
   options?: ExecuteHookOptions
 ): Promise<CommandResult> {
-  const home = process.env.HOME ?? ""
+  const home = getHomeDir()
 
   let expandedCommand = command
     .replace(/^~(?=\/|$)/g, home)