How to Repair HttpSys.dll (Free Download)

Last Updated: 11/26/2023
[Reading Time Required: 3.5 minutes]

HttpSys.dll uses the DLL file extension, which is more specifically known as a ActiveSync HttpSys Listener file. It is classified as a Win32 DLL (Dynamic link library) file, created for Microsoft® Windows Mobile® Device Center by Microsoft.

The first version of HttpSys.dll for Microsoft Windows Mobile Device Center for Windows Vista (64-bit) 6.1 was seen on 07/23/2007 in Windows 10. This is the most recent release date from Microsoft, according to our records.

Below, you find comprehensive file information, instructions for simple DLL file troubleshooting, and list of free HttpSys.dll downloads for each available file version.

File Analysis Provided by Jason Geater (Author)


Recommended Download: Fix HttpSys.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: HttpSys.dll
File Extension: DLL file extension
Description: ActiveSync HttpSys Listener
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: 0xd16b
Code Size: 77312


What are HttpSys.dll Error Messages?


Dynamic Link Library HttpSys.dll Errors

HttpSys.dll is considered a type of Dynamic Link Library (DLL) file. Dynamic Link Library files, like HttpSys.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 HttpSys.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 HttpSys.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 HttpSys.dll errors include:

Your HttpSys.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, HttpSys.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 HttpSys.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 HttpSys.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 HttpSys.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 HttpSys.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 HttpSys.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 HttpSys.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 HttpSys.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 HttpSys.dll file version. We maintain a comprehensive database of 100% malware-free HttpSys.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 HttpSys.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 10: C:\Windows\WindowsMobile\
  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 HttpSys.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 HttpSys.dll Files (Malware-Tested 100% Clean)


CAUTION : We strongly advise against downloading and copying HttpSys.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 HttpSys.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


Files Related to HttpSys.dll


DLL Files Related to HttpSys.dll

File Name Description Software Program (Version) File Size (bytes) File Location
rapistub.dll RAPI Provider Microsoft® Windows Mobile® Device Center (6.1.6965.0) 253832 C:\WINDOWS\system32\wbem\
ASStatusL.dll Airsync Status Listener Microsoft® Windows Mobile® Device Center (6.1.6965.0) 32648 C:\Users\Tester\AppData\Local\Microsoft\OneDriv...
HttpSys.dll ActiveSync HttpSys Listener Microsoft® Windows Mobile® Device Center (6.1.6965.0) 95112 C:\Users\Tester\AppData\Local\Microsoft\OneDriv...
wcescpxy.dll WCESCOMM Proxy Provider Microsoft® Windows Mobile® Device Center (6.1.6965.0) 40840 C:\WINDOWS\system32\wbem\
outstore.dll Mobile Device Replication Outlook Store Microsoft® Windows Mobile® Device Center (6.1.6965.0) 270728 C:\Users\Tester\AppData\Local\Microsoft\OneDriv...

Other Files Related to HttpSys.dll

File Name Description Software Program (Version) File Size (bytes) File Location
WLANAP_profile_v1.xsd XML Schema Definition Windows 7 7504 C:\Windows\L2Schemas\
WLAN_profile_v1.xsd XML Schema Definition Windows 8 15591 C:\Windows\L2Schemas\
WLAN_profile_v1.xsd XML Schema Definition Windows 10 18585 C:\Windows\L2Schemas\
WLAN_policy_v1.xsd XML Schema Definition Windows 7 7405 C:\Windows\L2Schemas\
WLAN_policy_v1.xsd XML Schema Definition Windows 8 7627 C:\Windows\L2Schemas\


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