Download and Repair Rapi.dll Issues

Last Updated: 11/25/2023
[Time to Read Article: 5 minutes]

rapi.dll, also known as a ActiveSync RAPI Backward Compatibility file, was created by Microsoft for the development of Microsoft® Windows Mobile® Device Center. DLL files fall under under the Win64 DLL (Dynamic link library) file type category.

rapi.dll was first developed on 11/08/2006 in the Windows Vista Operating System for Windows Vista. The latest file version for Microsoft Windows Mobile Device Center for Windows Vista (64-bit) 6.1 is v6.1.6965.0 released on 07/23/2007.

In this short article, you will discover detailed file information, steps for troubleshooting DLL file problems with rapi.dll, and list of free downloads for every version that exists in our comprehensive file directory.

File Analysis Provided by Jason Geater (Author)


Recommended Download: Fix rapi.dll / Microsoft Windows Mobile Device Center for Windows Vista (64-bit)-related registry issues with WinThruster.

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File Overview


General Information
File Name: rapi.dll
File Extension: DLL file extension
Description: ActiveSync RAPI Backward Compatibility
Object File Type: Dynamic link library
File Operating System: Windows NT 32-bit
MIME Type: application/octet-stream
User Popularity Rating:
 
Developer and Software Information
Software Developer: Microsoft Corporation
Software Program: Microsoft® Windows Mobile® Device Center
Legal Copyright: © Microsoft Corporation. All rights reserved.
File Details
Character Set: Unicode
Language Code: English (U.S.)
File Flags: (none)
File Flags Mask: 0x003f
Entry Point: 0x18680
Code Size: 107008


What are rapi.dll Error Messages?


Dynamic Link Library rapi.dll Errors

rapi.dll is considered a type of Dynamic Link Library (DLL) file. Dynamic Link Library files, like rapi.dll, are essentially a "guide book" that stores information and instructions for executable (EXE) files - like Setup.exe - to follow. These files were created so that multiple programs (eg. Microsoft Windows Mobile Device Center for Windows Vista (64-bit)) could share the same rapi.dll file, saving valuable memory allocation, therefore making your computer run more efficiently.

Unfortunately, what makes DLL files so convenient and efficient, also makes them extremely vulnerable to problems. If something happens to a shared DLL file, either it goes missing or gets corrupted in some way, it can generate a "runtime" error message. Runtime is pretty self-explanatory; it means that these errors are triggered when rapi.dll is attempted to be loaded either when Microsoft Windows Mobile Device Center for Windows Vista (64-bit) is starting up, or in some cases already running. Some of the most common rapi.dll errors include:

Your rapi.dll file could be missing due to accidental deletion, uninstalled as a shared file of another program (shared with Microsoft Windows Mobile Device Center for Windows Vista (64-bit)), or deleted by a malware infection. Furthermore, rapi.dll file corruption could be caused from a power outage when loading Microsoft Windows Mobile Device Center for Windows Vista (64-bit), system crash while loading rapi.dll, bad sectors on your storage media (usually your primary hard drive), or quite commonly, a malware infection. Thus, it's critical to make sure your anti-virus is kept up-to-date and scanning regularly.



How to Fix rapi.dll Errors in 3 Steps (Time to complete: ~5-15 minutes)

If you're encountering one of the error messages above, follow these troubleshooting steps to resolve your rapi.dll issue. These troubleshooting steps are listed in the recommended order of execution.


Step 1: Restore your PC back to the latest restore point, "snapshot", or backup image before error occurred.

To begin System Restore (Windows XP, Vista, 7, 8, and 10):

  1. Hit the Windows Start button
  2. When you see the search box, type "System Restore" and press "ENTER".
  3. In the search results, find and click System Restore.
  4. Please enter the administrator password (if applicable / prompted).
  5. Follow the steps in the System Restore Wizard to choose a relevant restore point.
  6. Restore your computer to that backup image.

If the Step 1 fails to resolve the rapi.dll error, please proceed to the Step 2 below.

Step 2: If recently installed Microsoft Windows Mobile Device Center for Windows Vista (64-bit) (or related software), uninstall then try reinstalling Microsoft Windows Mobile Device Center for Windows Vista (64-bit) software.

You can uninstall Microsoft Windows Mobile Device Center for Windows Vista (64-bit) software by following these instructions (Windows XP, Vista, 7, 8, and 10):

  1. Hit the Windows Start button
  2. In the search box, type "Uninstall" and press "ENTER".
  3. In the search results, find and click "Add or Remove Programs"
  4. Find the entry for Microsoft Windows Mobile Device Center for Windows Vista (64-bit) 6.1 and click "Uninstall"
  5. Follow the prompts for uninstallation.

After the software has been fully uninstalled, restart your PC and reinstall Microsoft Windows Mobile Device Center for Windows Vista (64-bit) software.

If this Step 2 fails as well, please proceed to the Step 3 below.

Microsoft Windows Mobile Device Center for Windows Vista (64-bit) 6.1

Microsoft Corporation

Step 3: Perform a Windows Update.

When the first two steps haven't solved your issue, it might be a good idea to run Windows Update. Many rapi.dll error messages that are encountered can be contributed to an outdated Windows Operating System. To run Windows Update, please follow these easy steps:

  1. Hit the Windows Start button
  2. In the search box, type "Update" and press "ENTER".
  3. In the Windows Update dialog box, click "Check for Updates" (or similar button depending on your Windows version)
  4. If updates are available for download, click "Install Updates".
  5. After the update is completed, restart your PC.

If Windows Update failed to resolve the rapi.dll error message, please proceed to next step. Please note that this final step is recommended for advanced PC users only.



If Those Steps Fail: Download and Replace Your rapi.dll File (Caution: Advanced)

If none of the previous three troubleshooting steps have resolved your issue, you can try a more aggressive approach (Note: Not recommended for amateur PC users) by downloading and replacing your appropriate rapi.dll file version. We maintain a comprehensive database of 100% malware-free rapi.dll files for every applicable version of Microsoft Windows Mobile Device Center for Windows Vista (64-bit). Please follow the steps below to download and properly replace you file:

  1. Locate your Windows operating system version in the list of below "Download rapi.dll Files".
  2. Click the appropriate "Download Now" button and download your Windows file version.
  3. Copy this file to the appropriate Microsoft Windows Mobile Device Center for Windows Vista (64-bit) folder location:
    Windows Vista: C:\Windows\System32\DriverStore\FileRepository\winmobil.inf_4e416d9f\
    Windows Vista: C:\Windows\System32\DriverStore\FileRepository\winmobil.inf_e19c65de\
    Windows Vista: C:\Windows\System32\DriverStore\FileRepository\winmobil.inf_fd23a282\
    Windows 10: C:\Windows\System32\
    Windows 10: C:\Windows\System32\DriverStore\FileRepository\wcebth.inf_amd64_92cde66e1cfb521e\
    Show 6 more directories +
    Windows 10: C:\Windows\System32\DriverStore\FileRepository\wcerndis.inf_amd64_7f46c8a40bd97188\
    Windows 10: C:\Windows\System32\DriverStore\FileRepository\wceusbsh.inf_amd64_ed7e79d05f4c4512\
    Windows 10: C:\Windows\WindowsMobile\Drivers\Bluetooth\
    Windows 10: C:\Windows\WindowsMobile\Drivers\RNDIS\
    Windows 10: C:\Windows\WindowsMobile\Drivers\Serial\
    Windows 10: C:\Windows\SysWOW64\
  4. Restart your computer.

If this final step has failed and you're still encountering the error, you're only remaining option is to do a clean installation of Windows 10.


GEEK TIP : We must emphasize that reinstalling Windows will be a very time-consuming and advanced task to resolve rapi.dll problems. To avoid data loss, you must be sure that you have backed-up all of your important documents, pictures, software installers, and other personal data before beginning the process. If you are not currently backing up your data, you need to do so immediately.



Download rapi.dll Files (Malware-Tested 100% Clean)


CAUTION : We strongly advise against downloading and copying rapi.dll to your appropriate Windows system directory. Microsoft typically does not release Microsoft Windows Mobile Device Center for Windows Vista (64-bit) DLL files for download because they are bundled together inside of a software installer. The installer's task is to ensure that all correct verifications have been made before installing and placing rapi.dll and all other DLL files for Microsoft Windows Mobile Device Center for Windows Vista (64-bit). An incorrectly installed DLL file may create system instability and could cause your program or operating system to stop functioning altogether. Proceed with caution.

Windows 10
Windows Vista


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Qt5Network.dll C++ Application Development Framework Qt5 (5.11.1.0) 974184 C:\Users\Tester\AppData\Local\Microsoft\Windows\
rapiproxystub.dll RAPI Proxy Provider Microsoft® Windows Mobile® Device Center (6.1.6965.0) 34696 C:\Users\Tester\AppData\Local\Microsoft\OneDriv...
wow64-rapispxy.dll RAPI Proxy Provider Microsoft® Windows Mobile® Device Center (6.1.6965.0) 24456 C:\Users\Tester\AppData\Local\Microsoft\OneDriv...
qwindows.dll C++ Application Development Framework Qt5 (5.11.1.0) 1165160 C:\Users\Tester\AppData\Local\
CertAuth.dll Desktop Certificate Authentication Microsoft® Windows Mobile® Device Center (6.1.6965.0) 173960 C:\Users\Tester\AppData\Local\Microsoft\OneDriv...

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