MISSING DLL FILES

Ultimate Guide to Fix MSVCP, VCRUNTIME, and DLL Missing Errors

Understanding DLL Errors

Dynamic Link Library (DLL) files are essential components of the Windows operating system that allow multiple software programs to share the same functionality. When you see an error like 'MSVCP140.dll is missing', it means the game is trying to call a function from a library that isn't installed or is corrupted on your system.

Why does this happen?

  • Missing Visual C++ Redistributables: Most modern games are developed using Microsoft Visual Studio. These games require specific 'Redistributable' packages to run. If you haven't installed the 2015, 2017, or 2019 versions, the game will crash.
  • Corrupted System Files: Sometimes, a sudden power failure or a virus can corrupt these tiny files.
  • DirectX Version Mismatch: Older games look for d3dx9_43.dll, while newer ones need DX11 or DX12 files.

Step-by-Step Solutions

Method 1: Install All-in-One Visual C++ Runtime

Instead of downloading one by one, use an AIO (All-in-One) installer which updates everything from 2005 to 2022.

Method 2: Use System File Checker (SFC)

Open Command Prompt as Admin and type sfc /scannow. Windows will automatically find and replace missing system DLLs.

Official Resources & Downloads

0xc000007b ERROR

Fixing 'The Application Was Unable to Start Correctly' (0xc000007b)

The Mystery of 0xc000007b

This is one of the most frustrating errors for gamers. The technical reason behind this is a 'Bit Architecture Mismatch'. This happens when a 64-bit application tries to load a 32-bit DLL file, or vice versa.

Primary Causes

  • Mixing 32-bit and 64-bit DLLs: This often happens if you manually download DLL files from the internet and paste them into System32 or SysWOW64 folders.
  • Incomplete .NET Framework: Windows needs .NET to handle application requests. If it's outdated, this error pops up.

Detailed Fixes

Method 1: Reinstall .NET Framework

Go to Control Panel > Programs > Turn Windows features on or off. Ensure .NET 3.5 and 4.8 are checked.

Method 2: Replace Manual DLLs

If you recently copied a DLL manually, delete it and use the official Microsoft installers instead. This is the most common fix.

Official Resources

STEAM_API.DLL / CRACK ERRORS

Fixing Missing Steam_api.dll, Emp.dll, and Antivirus Deletions

Why Antivirus Hates Game Cracks

If you are using a repacked or cracked version of a game, your Antivirus (especially Windows Defender) will likely flag the 'steam_api.dll' or 'emp.dll' as a 'Trojan' or 'Malware'. This is a 'False Positive'. The antivirus sees the code that bypasses Steam's protection and thinks it's a virus.

How to Properly Fix This

Simply downloading the DLL from the internet is dangerous and rarely works. Follow these steps:

Step 1: Check Quarantine History

Open Windows Security > Virus & threat protection > Protection history. Find the file and click 'Restore'.

Step 2: Add Exclusion

To prevent it from happening again, add your whole Game Folder to the Exclusion list in your Antivirus settings.

Safety Resources

DIRECTX ERROR

Fixing DirectX Runtime Errors and 'DX11 Feature Level' Issues

The Role of DirectX in Modern Gaming

DirectX is a suite of technologies developed by Microsoft to provide hardware acceleration for heavy multimedia applications like 3D games and HD videos. When you see errors like 'DX11 Feature Level 10.0 is required' or 'DirectX Encountered an Unrecoverable Error', it usually indicates a communication breakdown between your GPU and the game engine.

Common Root Causes

  • Legacy Hardware: Your graphics card might not physically support the version of DirectX the game requires (e.g., trying to run a DX12 game on a DX10 card).
  • Outdated Drivers: Even if your card supports the tech, old drivers might lack the instructions needed for newer games.
  • Missing Legacy DLLs: Many modern games still rely on older DirectX 9 or 10 files that aren't included by default in Windows 10/11.

Comprehensive Fixes

Method 1: Update GPU Drivers (The 90% Fix)

Download the official software for your card (Nvidia GeForce Experience or AMD Adrenalin). These drivers contain the latest DirectX optimizations for new game releases.

Method 2: Install DirectX End-User Runtimes

This is crucial for older games. It installs the legacy D3DX9, D3DX10, and D3DX11 files that are often missing from fresh Windows installations.

Official Resources

ISDONE.DLL / UNARC.DLL

Solving Installation Failures: ISDone.dll and Unarc.dll Errors

Why Installations Fail

These errors typically appear when installing highly compressed 'repacks' (like FitGirl or DODI). The error means the decompression process failed, usually because the system couldn't write the data to the RAM or Hard Drive correctly.

Major Triggers

  • Insufficient RAM: Your PC doesn't have enough memory to handle the decompression of large game files.
  • Faulty RAM Modules: Even a single tiny error in your RAM hardware can cause a decompression crash.
  • Antivirus Interference: The antivirus scans the files as they are being unpacked, locking them and causing the installer to fail.

Step-by-Step Fixes

Method 1: Increase Virtual Memory (Pagefile)

Go to System Properties > Advanced > Performance > Virtual Memory. Set a custom size of at least 16GB (16384MB) to help your RAM during installation.

Method 2: Use Safe Mode

Restart your Windows in Safe Mode. This disables all background apps and antivirus, giving the installer 100% of your system resources.

Official Resources

BLACK SCREEN

Fixing Black Screen on Startup and Infinite Loading

Identifying the Black Screen Type

A black screen can happen for two reasons: Either the game is running but you can't see it (Resolution issue), or the game has crashed before it could render anything (Driver/Software issue).

Fixing Resolution Mismatch

If you hear game music but see a black screen, the game is trying to run at a resolution your monitor doesn't support. Press Alt + Enter to force the game into Windowed Mode. Once in settings, change the resolution to your native monitor size.

Fixing Missing Codecs

Some games use Windows Media Player codecs to play intro videos. If you have 'Windows N' edition, these codecs are missing. You must install the Media Feature Pack.

Official Resources

LOW MEMORY

Fixing 'Out of Memory' and Fatal System Crashes

Memory Management in Gaming

Modern AAA games like Cyberpunk 2077 or Starfield require massive amounts of VRAM (GPU Memory) and RAM. If your system runs out, Windows will force-close the game to prevent a system-wide crash.

Optimization Techniques

  • Clean Boot: Use msconfig to disable all non-Microsoft services on startup. This saves about 1GB-2GB of RAM.
  • Background Apps: Browsers like Chrome use immense amounts of RAM. Always close them before gaming.
  • GPU VRAM: If your GPU has low VRAM, lower the 'Texture Quality' in game settings. This is the biggest memory hog.

Official Resources

SAVE GAME ERROR

How to Fix 'Save Failed' or 'Permission Denied' Errors

Windows Security Restrictions

Windows 10 and 11 have a feature called 'Controlled Folder Access'. This prevents unauthorized apps from writing files to your 'Documents' folder. Since games save data there, Windows blocks them, resulting in a 'Save Failed' error.

The Administrator Fix

Always right-click your game executable and select 'Run as Administrator'. This gives the game the required 'Read/Write' permissions for your hard drive.

Anti-Virus Exclusions

Ensure that your game's Save folder (usually in Documents or AppData) is added to your Antivirus exclusion list.

LAG / FPS DROP

Optimizing Performance: Fix Lag, Stuttering, and Low FPS

Understanding FPS Drops

Low FPS is usually caused by a 'Hardware Bottleneck'. This means your CPU or GPU is working at 100% capacity and cannot keep up with the game's demands.

Primary Solutions

  • High Performance Power Plan: Go to Power Options in Windows and select 'High Performance'. This ensures your CPU doesn't slow down to save power.
  • Dual GPU Laptops: Many laptops try to run games on the weak Intel/AMD integrated graphics. Go to 'Graphics Settings' in Windows and set your game.exe to 'High Performance (Nvidia/AMD GPU)'.
  • Thermal Throttling: If your PC gets too hot, it slows down to cool off. Use a laptop cooling pad or clean your PC fans.

Official Resources

AUDIO ISSUES

Fixing No Sound, Audio Crackling, and Buzzing in Games

Audio Mismatch Problems

Audio issues in games are rarely caused by the game itself. They are almost always due to a mismatch between the game's output and your Windows sound settings.

The '48000Hz' Fix

Many games are designed to run at 48kHz. If your speakers are set to 96kHz or 192kHz, you might hear crackling. Go to Sound Settings > Device Properties > Advanced and set the format to '24-bit, 48000Hz (DVD Quality)'.

Spatial Sound Conflicts

Features like 'Windows Sonic' or 'Dolby Atmos' can sometimes confuse older game engines. Try disabling spatial sound if you experience audio lag or missing voices in cutscenes.