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How to Fix a Missing or Not Found DLL File Error

Beginner DLL Errors Applies to: Windows 7, Windows 10, Windows 11

A specific program says a particular .dll file is missing — here's the general approach that fixes the large majority of these, whatever the specific filename is.

Before you start: save any open work and note down what you were doing when the problem started — that context helps if you need to search further or ask for help.
  1. Understand what's actually happening first: a DLL (Dynamic Link Library) is a shared file that multiple programs can use at once, rather than each program carrying its own copy. When one goes missing or gets corrupted, every program that depends on it breaks with the same kind of message, which is why this error looks so similar across completely unrelated programs.
  2. Check whether the error names a Microsoft Visual C++ Redistributable file specifically — these have very recognizable naming patterns: anything starting with MSVCP or VCRUNTIME (like MSVCP140.dll or VCRUNTIME140.dll), or anything starting with api-ms-win-crt-. If so, skip straight to reinstalling the Visual C++ Redistributable package from Microsoft's own site rather than trying to hunt down the individual file — this single install covers dozens of these files at once and is almost always the actual fix.
  3. Run sfc /scannow from an admin Command Prompt — a genuine Windows system DLL going missing or corrupted is something System File Checker can often repair directly.
  4. Reinstall or repair the specific program that's showing the error — if the DLL is specific to that program rather than a shared system file, reinstalling restores its own copy.
  5. Update Windows fully via Settings > Windows Update — Microsoft periodically ships fixes for known DLL-related issues through regular updates.
  6. If the error appeared right after installing or updating something, consider whether that's the actual cause — uninstalling the recent addition and testing again can confirm it before you spend more time on other fixes.
  7. Avoid downloading the specific DLL file directly from a "free DLL download" site as a fix — these are a well-known source of malware, and the file you get often doesn't match the exact version your program needs anyway. Every legitimate fix above sources the file properly, through Windows itself, Microsoft's official redistributable installer, or the affected program's own installer.
Still not fixed? Send us the details and we'll help you dig further, or browse related guides in DLL Errors.

Frequently Asked Questions

Is it ever okay to download a single DLL file to replace a missing one?
It's genuinely risky and generally not recommended — DLL files from third-party download sites are a well-documented malware vector, and even a "clean" one may not match the exact version your program actually needs, causing further problems. Reinstalling the redistributable package or the program itself is the legitimate way to restore a missing DLL.
Why does this error affect multiple unrelated programs at once?
Because DLL files are shared — many different programs rely on the same underlying file (particularly Visual C++ Redistributable files), so one missing or corrupted shared file can break several unrelated programs at the same time, all showing a version of the same error.

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