aemarebackup.dll - Analyze and How to Fix Errors

★★★★☆ Verified File (27.08.2026)

⚠️ Important Notice: AEMareBackup DLL File - Manually replacing system libraries can brick future Windows updates or cause critical system failures.

Architecture:	32-bit (x86)	Compatible with 32 and 64-bit Windows
Antivirus scan	✅ Clean	No viruses detected.
Digital signature	🟡 Not signed	Signature missing. The file may have been modified.
Hash Integrity	✅ MD5: Verified	In file hash protection exist and it is verified.
File size	470 kb.	481280 bytes.

Hashes:

MD5: fbddc350be5181fe3ce0d6396b98fb58 ✅
SHA-1: 6894f55c39da36a3c41693bc2480714e1ac20226
SHA-256: 9772fcbd24833247dccbdc7579e96d5d6e42f7f27d5c885e4636c658233e9fef
SHA-512: ea91947c008c0d9d5511f6f3668838b7155735450b13f165527835a84ed4e096e05c98a35f148fda8f1c2565311752732fb911b59c3105d357b60fa1d6511bba

✅ This file is compatible with 32-bit Windows and can run on ✅ 64-bit Windows (via the WOW64 subsystem).

aemarebackup.dll File Information

Description: aemarebackup.dll is an official Microsoft dynamic link library related to the Windows Application Experience infrastructure. It is actively invoked by the system's compatibility telemetry runner (compattelrunner.exe) through a native automated background maintenance routine called MareBackup.
Standard File Location: C:\Windows\System32\aemarebackup.dll

How to Fix `aemarebackup.dll` Errors Without Downloading

Do not download this DLL file from third-party websites, as they often contain bundled malware. Instead, use the built-in Windows diagnostic utilities to repair it internally.

1. Run the System File Checker (SFC)

This native tool scans your core operating system directory, flags broken components, and automatically restores original copies from the Windows component cache.

Press the Windows Key, type cmd, right-click Command Prompt, and select Run as administrator.
Input the following command and hit Enter:
```
sfc /scannow
```
Keep the terminal open until the verification completes 100%.

2. Run the DISM Tool

If the SFC utility cannot locate a healthy file template inside its local cache repository, use the Deployment Image Servicing and Management (DISM) tool to stream fresh replacement files directly from secure Microsoft Update servers.

In the elevated Command Prompt window, run this command:
```
DISM /Online /Cleanup-Image /RestoreHealth
```
Once the operations finish successfully, restart your PC.

3. Re-register the DLL File

If the module is physically intact on your storage drive but throwing error messages, it may have lost its operational registry linkages. You can re-index it inside the Windows registry directory.

Open Command Prompt as an administrator.

Execute this exact instruction:

regsvr32 /i %windir%\system32\aemarebackup.dll

4. Clear Corrupted Telemetry Tasks

Because this file is triggered specifically by the Windows Customer Experience Improvement Program scheduler, corrupted cache blocks inside the telemetry architecture can cause perpetual system crashes.

Open Command Prompt as an administrator.

Force-stop the underlying telemetry engine routine with this command:

schtasks /change /tn "\Microsoft\Windows\Application Experience\MareBackup" /disable

This safely stops the broken background hook from triggering the file error without degrading your computer's stability.

If you'd like, let me know:

The exact error message text or code you are seeing.
When the error occurs (at startup, while gaming, or randomly).

📊 Diagnostics Tool: Verify Your `aemarebackup.dll` File

Worried that the file on your PC has been modified by malware? Drop it into the form below. Our script will verify its file size, cryptographic hash (MD5/SHA-1), and check for a valid Microsoft digital signature.