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WeChat / QQ / Chinese IM apps reporting DLL errors

WeChat / QQ / DingTalk / Lark fail to launch or crash after login

Typical symptoms

  • WeChat flashes and disappears
  • QQ crashes immediately after login
  • DingTalk / Lark report missing DLLs
  • "Entry point not found" errors

Official safe fix steps

  1. Install the latest Microsoft VC++ Redistributable

    WeChat, QQ, DingTalk and Lark are all built with VS 2015+ and depend on vcruntime140 / msvcp140. Installing VC_redist.x64.exe (on a 64-bit system) resolves most of these errors.

  2. Reinstall from the official site

    WeChat: weixin.qq.com Β· QQ: im.qq.com Β· DingTalk: dingtalk.com Β· Lark/Feishu: feishu.cn. Uninstall the current version (keep the chat history folder) and reinstall from the official site.

  3. Check if antivirus is blocking

    Antivirus tools (360, Huorong, Defender) sometimes flag IM-bundled DLLs as suspicious. Check the quarantine, restore the removed files, and add the install folder to the trusted list.

  4. Repair system files with sfc /scannow

    If none of the above work, a Windows system DLL (such as mscoree.dll) may be corrupt. Run the System File Checker.

    sfc /scannow
DISM /Online /Cleanup-Image /RestoreHealth

DLLs commonly seen in this scenario

vcruntime140.dll Visual C++ 2015-2022 Redistributable msvcp140.dll Visual C++ 2015-2022 Redistributable msvcr120.dll Visual C++ 2013 Redistributable msvcp120.dll Visual C++ 2013 Redistributable mscoree.dll .NET Framework
πŸ’‘ Still stuck? Check the general Fix Guide or look up your exact error code at Error Codes.

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