diff --git a/extensions/msteams/src/file-lock.ts b/extensions/msteams/src/file-lock.ts
new file mode 100644
index 0000000000..dd1a076355
--- /dev/null
+++ b/extensions/msteams/src/file-lock.ts
@@ -0,0 +1,189 @@
+import fs from "node:fs/promises";
+import path from "node:path";
+
+type FileLockOptions = {
+  retries: {
+    retries: number;
+    factor: number;
+    minTimeout: number;
+    maxTimeout: number;
+    randomize?: boolean;
+  };
+  stale: number;
+};
+
+type LockFilePayload = {
+  pid: number;
+  createdAt: string;
+};
+
+type HeldLock = {
+  count: number;
+  handle: fs.FileHandle;
+  lockPath: string;
+};
+
+const HELD_LOCKS_KEY = Symbol.for("openclaw.msteamsFileLockHeldLocks");
+
+function resolveHeldLocks(): Map<string, HeldLock> {
+  const proc = process as NodeJS.Process & {
+    [HELD_LOCKS_KEY]?: Map<string, HeldLock>;
+  };
+  if (!proc[HELD_LOCKS_KEY]) {
+    proc[HELD_LOCKS_KEY] = new Map<string, HeldLock>();
+  }
+  return proc[HELD_LOCKS_KEY];
+}
+
+const HELD_LOCKS = resolveHeldLocks();
+
+function isAlive(pid: number): boolean {
+  if (!Number.isFinite(pid) || pid <= 0) {
+    return false;
+  }
+  try {
+    process.kill(pid, 0);
+    return true;
+  } catch {
+    return false;
+  }
+}
+
+function computeDelayMs(retries: FileLockOptions["retries"], attempt: number): number {
+  const base = Math.min(
+    retries.maxTimeout,
+    Math.max(retries.minTimeout, retries.minTimeout * retries.factor ** attempt),
+  );
+  const jitter = retries.randomize ? 1 + Math.random() : 1;
+  return Math.min(retries.maxTimeout, Math.round(base * jitter));
+}
+
+async function readLockPayload(lockPath: string): Promise<LockFilePayload | null> {
+  try {
+    const raw = await fs.readFile(lockPath, "utf8");
+    const parsed = JSON.parse(raw) as Partial<LockFilePayload>;
+    if (typeof parsed.pid !== "number" || typeof parsed.createdAt !== "string") {
+      return null;
+    }
+    return { pid: parsed.pid, createdAt: parsed.createdAt };
+  } catch {
+    return null;
+  }
+}
+
+async function resolveNormalizedFilePath(filePath: string): Promise<string> {
+  const resolved = path.resolve(filePath);
+  const dir = path.dirname(resolved);
+  await fs.mkdir(dir, { recursive: true });
+  try {
+    const realDir = await fs.realpath(dir);
+    return path.join(realDir, path.basename(resolved));
+  } catch {
+    return resolved;
+  }
+}
+
+async function isStaleLock(lockPath: string, staleMs: number): Promise<boolean> {
+  const payload = await readLockPayload(lockPath);
+  if (payload?.pid && !isAlive(payload.pid)) {
+    return true;
+  }
+  if (payload?.createdAt) {
+    const createdAt = Date.parse(payload.createdAt);
+    if (!Number.isFinite(createdAt) || Date.now() - createdAt > staleMs) {
+      return true;
+    }
+  }
+  try {
+    const stat = await fs.stat(lockPath);
+    return Date.now() - stat.mtimeMs > staleMs;
+  } catch {
+    return true;
+  }
+}
+
+type FileLockHandle = {
+  release: () => Promise<void>;
+};
+
+async function acquireFileLock(
+  filePath: string,
+  options: FileLockOptions,
+): Promise<FileLockHandle> {
+  const normalizedFile = await resolveNormalizedFilePath(filePath);
+  const lockPath = `${normalizedFile}.lock`;
+  const held = HELD_LOCKS.get(normalizedFile);
+  if (held) {
+    held.count += 1;
+    return {
+      release: async () => {
+        const current = HELD_LOCKS.get(normalizedFile);
+        if (!current) {
+          return;
+        }
+        current.count -= 1;
+        if (current.count > 0) {
+          return;
+        }
+        HELD_LOCKS.delete(normalizedFile);
+        await current.handle.close().catch(() => undefined);
+        await fs.rm(current.lockPath, { force: true }).catch(() => undefined);
+      },
+    };
+  }
+
+  const attempts = Math.max(1, options.retries.retries + 1);
+  for (let attempt = 0; attempt < attempts; attempt += 1) {
+    try {
+      const handle = await fs.open(lockPath, "wx");
+      await handle.writeFile(
+        JSON.stringify({ pid: process.pid, createdAt: new Date().toISOString() }, null, 2),
+        "utf8",
+      );
+      HELD_LOCKS.set(normalizedFile, { count: 1, handle, lockPath });
+      return {
+        release: async () => {
+          const current = HELD_LOCKS.get(normalizedFile);
+          if (!current) {
+            return;
+          }
+          current.count -= 1;
+          if (current.count > 0) {
+            return;
+          }
+          HELD_LOCKS.delete(normalizedFile);
+          await current.handle.close().catch(() => undefined);
+          await fs.rm(current.lockPath, { force: true }).catch(() => undefined);
+        },
+      };
+    } catch (err) {
+      const code = (err as { code?: string }).code;
+      if (code !== "EEXIST") {
+        throw err;
+      }
+      if (await isStaleLock(lockPath, options.stale)) {
+        await fs.rm(lockPath, { force: true }).catch(() => undefined);
+        continue;
+      }
+      if (attempt >= attempts - 1) {
+        break;
+      }
+      await new Promise((resolve) => setTimeout(resolve, computeDelayMs(options.retries, attempt)));
+    }
+  }
+
+  throw new Error(`file lock timeout for ${normalizedFile}`);
+}
+
+export async function withFileLock<T>(
+  filePath: string,
+  options: FileLockOptions,
+  fn: () => Promise<T>,
+): Promise<T> {
+  const lock = await acquireFileLock(filePath, options);
+  try {
+    return await fn();
+  } finally {
+    await lock.release();
+  }
+}
diff --git a/extensions/msteams/src/store-fs.ts b/extensions/msteams/src/store-fs.ts
index 75ce75235b..c827a955f1 100644
--- a/extensions/msteams/src/store-fs.ts
+++ b/extensions/msteams/src/store-fs.ts
@@ -2,7 +2,7 @@ import crypto from "node:crypto";
 import fs from "node:fs";
 import path from "node:path";
 import { safeParseJson } from "openclaw/plugin-sdk";
-import lockfile from "proper-lockfile";
+import { withFileLock as withPathLock } from "./file-lock.js";
 
 const STORE_LOCK_OPTIONS = {
   retries: {
@@ -60,17 +60,7 @@ export async function withFileLock<T>(
   fn: () => Promise<T>,
 ): Promise<T> {
   await ensureJsonFile(filePath, fallback);
-  let release: (() => Promise<void>) | undefined;
-  try {
-    release = await lockfile.lock(filePath, STORE_LOCK_OPTIONS);
+  return await withPathLock(filePath, STORE_LOCK_OPTIONS, async () => {
     return await fn();
-  } finally {
-    if (release) {
-      try {
-        await release();
-      } catch {
-        // ignore unlock errors
-      }
-    }
-  }
+  });
 }
diff --git a/src/agents/auth-profiles/oauth.ts b/src/agents/auth-profiles/oauth.ts
index 4fff5a3012..a7ddc3c651 100644
--- a/src/agents/auth-profiles/oauth.ts
+++ b/src/agents/auth-profiles/oauth.ts
@@ -4,9 +4,9 @@ import {
   type OAuthCredentials,
   type OAuthProvider,
 } from "@mariozechner/pi-ai";
-import lockfile from "proper-lockfile";
 import type { OpenClawConfig } from "../../config/config.js";
 import type { AuthProfileStore } from "./types.js";
+import { withFileLock } from "../../infra/file-lock.js";
 import { refreshQwenPortalCredentials } from "../../providers/qwen-portal-oauth.js";
 import { refreshChutesTokens } from "../chutes-oauth.js";
 import { AUTH_STORE_LOCK_OPTIONS, log } from "./constants.js";
@@ -40,12 +40,7 @@ async function refreshOAuthTokenWithLock(params: {
   const authPath = resolveAuthStorePath(params.agentDir);
   ensureAuthStoreFile(authPath);
 
-  let release: (() => Promise<void>) | undefined;
-  try {
-    release = await lockfile.lock(authPath, {
-      ...AUTH_STORE_LOCK_OPTIONS,
-    });
-
+  return await withFileLock(authPath, AUTH_STORE_LOCK_OPTIONS, async () => {
     const store = ensureAuthProfileStore(params.agentDir);
     const cred = store.profiles[params.profileId];
     if (!cred || cred.type !== "oauth") {
@@ -94,15 +89,7 @@ async function refreshOAuthTokenWithLock(params: {
     saveAuthProfileStore(store, params.agentDir);
 
     return result;
-  } finally {
-    if (release) {
-      try {
-        await release();
-      } catch {
-        // ignore unlock errors
-      }
-    }
-  }
+  });
 }
 
 async function tryResolveOAuthProfile(params: {
diff --git a/src/agents/auth-profiles/store.ts b/src/agents/auth-profiles/store.ts
index 65c133384d..989d89d8ef 100644
--- a/src/agents/auth-profiles/store.ts
+++ b/src/agents/auth-profiles/store.ts
@@ -1,8 +1,8 @@
 import type { OAuthCredentials } from "@mariozechner/pi-ai";
 import fs from "node:fs";
-import lockfile from "proper-lockfile";
 import type { AuthProfileCredential, AuthProfileStore, ProfileUsageStats } from "./types.js";
 import { resolveOAuthPath } from "../../config/paths.js";
+import { withFileLock } from "../../infra/file-lock.js";
 import { loadJsonFile, saveJsonFile } from "../../infra/json-file.js";
 import { AUTH_STORE_LOCK_OPTIONS, AUTH_STORE_VERSION, log } from "./constants.js";
 import { syncExternalCliCredentials } from "./external-cli-sync.js";
@@ -25,25 +25,17 @@ export async function updateAuthProfileStoreWithLock(params: {
   const authPath = resolveAuthStorePath(params.agentDir);
   ensureAuthStoreFile(authPath);
 
-  let release: (() => Promise<void>) | undefined;
   try {
-    release = await lockfile.lock(authPath, AUTH_STORE_LOCK_OPTIONS);
-    const store = ensureAuthProfileStore(params.agentDir);
-    const shouldSave = params.updater(store);
-    if (shouldSave) {
-      saveAuthProfileStore(store, params.agentDir);
-    }
-    return store;
+    return await withFileLock(authPath, AUTH_STORE_LOCK_OPTIONS, async () => {
+      const store = ensureAuthProfileStore(params.agentDir);
+      const shouldSave = params.updater(store);
+      if (shouldSave) {
+        saveAuthProfileStore(store, params.agentDir);
+      }
+      return store;
+    });
   } catch {
     return null;
-  } finally {
-    if (release) {
-      try {
-        await release();
-      } catch {
-        // ignore unlock errors
-      }
-    }
   }
 }
 
diff --git a/src/infra/file-lock.ts b/src/infra/file-lock.ts
new file mode 100644
index 0000000000..b09af514e2
--- /dev/null
+++ b/src/infra/file-lock.ts
@@ -0,0 +1,192 @@
+import fs from "node:fs/promises";
+import path from "node:path";
+
+export type FileLockOptions = {
+  retries: {
+    retries: number;
+    factor: number;
+    minTimeout: number;
+    maxTimeout: number;
+    randomize?: boolean;
+  };
+  stale: number;
+};
+
+type LockFilePayload = {
+  pid: number;
+  createdAt: string;
+};
+
+type HeldLock = {
+  count: number;
+  handle: fs.FileHandle;
+  lockPath: string;
+};
+
+const HELD_LOCKS_KEY = Symbol.for("openclaw.fileLockHeldLocks");
+
+function resolveHeldLocks(): Map<string, HeldLock> {
+  const proc = process as NodeJS.Process & {
+    [HELD_LOCKS_KEY]?: Map<string, HeldLock>;
+  };
+  if (!proc[HELD_LOCKS_KEY]) {
+    proc[HELD_LOCKS_KEY] = new Map<string, HeldLock>();
+  }
+  return proc[HELD_LOCKS_KEY];
+}
+
+const HELD_LOCKS = resolveHeldLocks();
+
+function isAlive(pid: number): boolean {
+  if (!Number.isFinite(pid) || pid <= 0) {
+    return false;
+  }
+  try {
+    process.kill(pid, 0);
+    return true;
+  } catch {
+    return false;
+  }
+}
+
+function computeDelayMs(retries: FileLockOptions["retries"], attempt: number): number {
+  const base = Math.min(
+    retries.maxTimeout,
+    Math.max(retries.minTimeout, retries.minTimeout * retries.factor ** attempt),
+  );
+  const jitter = retries.randomize ? 1 + Math.random() : 1;
+  return Math.min(retries.maxTimeout, Math.round(base * jitter));
+}
+
+async function readLockPayload(lockPath: string): Promise<LockFilePayload | null> {
+  try {
+    const raw = await fs.readFile(lockPath, "utf8");
+    const parsed = JSON.parse(raw) as Partial<LockFilePayload>;
+    if (typeof parsed.pid !== "number" || typeof parsed.createdAt !== "string") {
+      return null;
+    }
+    return { pid: parsed.pid, createdAt: parsed.createdAt };
+  } catch {
+    return null;
+  }
+}
+
+async function resolveNormalizedFilePath(filePath: string): Promise<string> {
+  const resolved = path.resolve(filePath);
+  const dir = path.dirname(resolved);
+  await fs.mkdir(dir, { recursive: true });
+  try {
+    const realDir = await fs.realpath(dir);
+    return path.join(realDir, path.basename(resolved));
+  } catch {
+    return resolved;
+  }
+}
+
+async function isStaleLock(lockPath: string, staleMs: number): Promise<boolean> {
+  const payload = await readLockPayload(lockPath);
+  if (payload?.pid && !isAlive(payload.pid)) {
+    return true;
+  }
+  if (payload?.createdAt) {
+    const createdAt = Date.parse(payload.createdAt);
+    if (!Number.isFinite(createdAt) || Date.now() - createdAt > staleMs) {
+      return true;
+    }
+  }
+  try {
+    const stat = await fs.stat(lockPath);
+    return Date.now() - stat.mtimeMs > staleMs;
+  } catch {
+    return true;
+  }
+}
+
+type FileLockHandle = {
+  lockPath: string;
+  release: () => Promise<void>;
+};
+
+export async function acquireFileLock(
+  filePath: string,
+  options: FileLockOptions,
+): Promise<FileLockHandle> {
+  const normalizedFile = await resolveNormalizedFilePath(filePath);
+  const lockPath = `${normalizedFile}.lock`;
+  const held = HELD_LOCKS.get(normalizedFile);
+  if (held) {
+    held.count += 1;
+    return {
+      lockPath,
+      release: async () => {
+        const current = HELD_LOCKS.get(normalizedFile);
+        if (!current) {
+          return;
+        }
+        current.count -= 1;
+        if (current.count > 0) {
+          return;
+        }
+        HELD_LOCKS.delete(normalizedFile);
+        await current.handle.close().catch(() => undefined);
+        await fs.rm(current.lockPath, { force: true }).catch(() => undefined);
+      },
+    };
+  }
+
+  const attempts = Math.max(1, options.retries.retries + 1);
+  for (let attempt = 0; attempt < attempts; attempt += 1) {
+    try {
+      const handle = await fs.open(lockPath, "wx");
+      await handle.writeFile(
+        JSON.stringify({ pid: process.pid, createdAt: new Date().toISOString() }, null, 2),
+        "utf8",
+      );
+      HELD_LOCKS.set(normalizedFile, { count: 1, handle, lockPath });
+      return {
+        lockPath,
+        release: async () => {
+          const current = HELD_LOCKS.get(normalizedFile);
+          if (!current) {
+            return;
+          }
+          current.count -= 1;
+          if (current.count > 0) {
+            return;
+          }
+          HELD_LOCKS.delete(normalizedFile);
+          await current.handle.close().catch(() => undefined);
+          await fs.rm(current.lockPath, { force: true }).catch(() => undefined);
+        },
+      };
+    } catch (err) {
+      const code = (err as { code?: string }).code;
+      if (code !== "EEXIST") {
+        throw err;
+      }
+      if (await isStaleLock(lockPath, options.stale)) {
+        await fs.rm(lockPath, { force: true }).catch(() => undefined);
+        continue;
+      }
+      if (attempt >= attempts - 1) {
+        break;
+      }
+      await new Promise((resolve) => setTimeout(resolve, computeDelayMs(options.retries, attempt)));
+    }
+  }
+
+  throw new Error(`file lock timeout for ${normalizedFile}`);
+}
+
+export async function withFileLock<T>(
+  filePath: string,
+  options: FileLockOptions,
+  fn: () => Promise<T>,
+): Promise<T> {
+  const lock = await acquireFileLock(filePath, options);
+  try {
+    return await fn();
+  } finally {
+    await lock.release();
+  }
+}
diff --git a/src/pairing/pairing-store.ts b/src/pairing/pairing-store.ts
index b3f629d11d..69a1e8cab7 100644
--- a/src/pairing/pairing-store.ts
+++ b/src/pairing/pairing-store.ts
@@ -2,10 +2,10 @@ import crypto from "node:crypto";
 import fs from "node:fs";
 import os from "node:os";
 import path from "node:path";
-import lockfile from "proper-lockfile";
 import type { ChannelId, ChannelPairingAdapter } from "../channels/plugins/types.js";
 import { getPairingAdapter } from "../channels/plugins/pairing.js";
 import { resolveOAuthDir, resolveStateDir } from "../config/paths.js";
+import { withFileLock as withPathLock } from "../infra/file-lock.js";
 import { resolveRequiredHomeDir } from "../infra/home-dir.js";
 import { safeParseJson } from "../utils.js";
 
@@ -118,19 +118,9 @@ async function withFileLock<T>(
   fn: () => Promise<T>,
 ): Promise<T> {
   await ensureJsonFile(filePath, fallback);
-  let release: (() => Promise<void>) | undefined;
-  try {
-    release = await lockfile.lock(filePath, PAIRING_STORE_LOCK_OPTIONS);
+  return await withPathLock(filePath, PAIRING_STORE_LOCK_OPTIONS, async () => {
     return await fn();
-  } finally {
-    if (release) {
-      try {
-        await release();
-      } catch {
-        // ignore unlock errors
-      }
-    }
-  }
+  });
 }
 
 function parseTimestamp(value: string | undefined): number | null {