0X000002AE

Fix ERROR_DLL_MIGHT_BE_INSECURE (0X000002AE) on Windows

EP
Erropedia Team
📅 May 27, 2026 📅 Updated Sep 16, 2026 👁 52 views Windows Errors Intermediate
This error means a DLL your app tried to run looked sketchy to Windows. We'll show you how to fix it without disabling security.

When This Error Hits

You're opening an app — maybe a legacy business tool, a game mod launcher, or a custom-built utility — and Windows slaps you with this: "The application is attempting to run executable code from the module %hs." The exact error code is 0X000002AE. It usually pops up right after you double-click the executable, before the app even shows a window. This tripped me up the first time I saw it too — the app worked fine on other machines, but on this one, Windows suddenly decided the DLL was shady.

What's Actually Happening

Windows has this security feature called Code Integrity that checks every DLL before it loads. If the DLL isn't signed properly, or if it was downloaded from the internet without a trusted publisher, Windows flags it as "might be insecure." The 0X000002AE error is Windows saying, "I'm not comfortable running this code." It's not a virus warning — it's more like a bouncer checking IDs and finding the ID is expired or missing. The real trigger is often a DLL that was sideloaded, meaning an app dropped a DLL into its own folder without registering it in the system.

The Fix: Step by Step

Step 1: Find the Offending DLL

You need to know which module %hs refers to. Check the Windows Application Event Log:

  1. Press Win + R, type eventvwr.msc, and hit Enter.
  2. Expand Windows Logs and click Application.
  3. Look for an error with event ID 1000 or 1001 that includes ERROR_DLL_MIGHT_BE_INsecure.
  4. In the details, you'll see the full path to the DLL that triggered it — something like C:\Program Files\SomeApp\untrusted.dll.

Step 2: Check the DLL's Digital Signature

Right-click the DLL file, go to Properties > Digital Signatures tab. If that tab is missing or says "This digital signature is not valid," that's your problem. I recommend unblocking it from the file's properties, not disabling Windows Defender entirely.

Step 3: Unblock the File

If the DLL was downloaded from the internet, Windows marks it as blocked. You can unblock it:

  1. Right-click the DLL file (not the app EXE) and choose Properties.
  2. On the General tab, at the bottom, look for a Security section that says "This file came from another computer and might be blocked."
  3. Check the Unblock box and click Apply.

That usually fixes it for simple cases. If the option isn't there, the DLL might be packed inside an installer — skip to Step 4.

Step 4: Add a Registry Exception (Only If You Trust the App)

Skip this if you're not absolutely sure the app is safe. This tells Windows to stop checking the specific DLL. Open Registry Editor (regedit as admin), then go to:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System

Create a new DWORD (32-bit) called DisableExceptionChainValidation and set it to 0. Restart the app. If the error persists, the issue isn't exception chain validation — try the next step.

Step 5: Reinstall or Re-register the DLL

Sometimes the DLL is just corrupted. Uninstall the app completely, delete any leftover folders in %appdata% and %programdata%, then reinstall the latest version from the official source. If you can't reinstall, you can try registering the DLL manually:

regsvr32 "C:\path\to\offending.dll"

Run that in an admin Command Prompt. You'll get a success or failure message — failure means the DLL is likely unsigned or broken, and you need a fresh copy.

If It Still Fails

Check three things:

  • Antivirus quarantine: Open Windows Security > Virus & threat protection > Protection history. See if the DLL was flagged and removed. Restore it and add an exclusion for the app's folder.
  • Group Policy: If you're on a work or school PC, an admin may have set Windows Defender Application Control to block all unsigned DLLs. You'll need them to whitelist the app.
  • App compatibility: Some older apps (pre-2015) just don't play nice with Windows 10/11's code integrity checks. Running the EXE in Windows 7 compatibility mode sometimes bypasses the error — right-click the EXE, Properties > Compatibility > Run this program in compatibility mode for Windows 7.

The error is annoying, but it's Windows doing its job. Once you track down which DLL is the culprit, the fix is straightforward — and you'll never be tripped up by it again.

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EP
Erropedia Team
Tech Support Editors
The Erropedia editorial team researches and documents real-world tech errors from across Windows, Linux, macOS, networking, databases, cloud platforms, and more. Every solution is reviewed for accuracy and updated as software and systems evolve.