How to Fix ActiveSyncCsp.dll Missing Error (Solved)

What is ActiveSyncCsp.dll?

ActiveSyncCsp.dll is a Dynamic Link Library (DLL) file that plays an essential role in the Windows operating system. This particular DLL file is associated with Microsoft’s ActiveSync service, which helps to synchronize data between devices such as smartphones and computers. When this file goes missing or gets corrupted, it can cause various issues with device synchronization.

Why is ActiveSyncCsp.dll Missing?

There are several reasons why the ActiveSyncCsp.dll may be missing from your Windows system. Common causes include malware infections, accidental deletion, or system file corruption.

Step-by-Step Fixes:

Method 1: Reinstall Visual C++ Redistributable

The ActiveSyncCsp.dll file is often associated with Microsoft Visual C++ Redistributable packages. To resolve the issue, you can reinstall these packages using the following steps:

1. Visit the Microsoft Download Center at: Microsoft Visual C++ Redistributable for Visual Studio 2015, 2017 and 2019
2. Download the appropriate package for your system (x64 or x86)
3. Run the downloaded installer and follow the on-screen instructions to complete the installation.

Method 2: Run SFC /scannow command

Running the System File Checker (SFC) scan can help repair missing or corrupted system files, including ActiveSyncCsp.dll. Here’s how:

4. Press Windows key + X and select “Command Prompt (Admin)” or “Windows PowerShell (Admin)” from the menu
5. Type the following command and press Enter: `sfc /scannow`
6. Wait for the scan to complete. It may take several minutes.
7. Restart your computer to allow the repairs to take effect.

Method 3: Update System Drivers

Updating system drivers can also help resolve issues with missing or corrupted DLL files. You can update drivers manually or use a third-party tool like Driver Easy:

7. Visit the manufacturer’s website to find and download the latest drivers for your devices
8. Alternatively, use a tool like Driver Easy to automatically update your drivers
9. Install the downloaded drivers and restart your computer.

Conclusion

The ActiveSyncCsp.dll error in Windows can be caused by various issues, including malware infections, accidental deletion, or system file corruption. By following the step-by-step fixes provided above, you should be able to resolve this issue and get your device synchronization working smoothly once again.