What are httpsys.dll.mui Error Messages?

Dynamic Link Library httpsys.dll.mui Errors

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

• Access Violation at address - httpsys.dll.mui.
• httpsys.dll.mui could not be found.
• Cannot find C:\Windows\WindowsMobile\zh-TW\httpsys.dll.mui.
• Cannot register httpsys.dll.mui.
• Cannot start Microsoft Windows Mobile Device Center for Windows Vista (64-bit). A required component is missing: httpsys.dll.mui. Please install Microsoft Windows Mobile Device Center for Windows Vista (64-bit) again.
• Failed to load httpsys.dll.mui.
• The application has failed to start because httpsys.dll.mui was not found.
• The file httpsys.dll.mui is missing or corrupt.
• This application failed to start because httpsys.dll.mui was not found. Re-installing the application may fix this problem.

Your httpsys.dll.mui 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.mui 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.mui, 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.mui 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.mui issue. These troubleshooting steps are listed in the recommended order of execution.

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.mui error, please proceed to the Step 2 below.

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

When the first two steps haven't solved your issue, it might be a good idea to run Windows Update. Many httpsys.dll.mui 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.mui 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.mui 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.mui file version. We maintain a comprehensive database of 100% malware-free httpsys.dll.mui 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.mui 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\zh-TW\
   Windows 10: C:\Windows\WindowsMobile\zh-CN\
   Windows 10: C:\Windows\WindowsMobile\tr-TR\
   Windows 10: C:\Windows\WindowsMobile\sv-SE\
   Windows 10: C:\Windows\WindowsMobile\sk-SK\
   Show 19 more directories +

   Windows 10: C:\Windows\WindowsMobile\ru-RU\
   Windows 10: C:\Windows\WindowsMobile\ro-RO\
   Windows 10: C:\Windows\WindowsMobile\pt-PT\
   Windows 10: C:\Windows\WindowsMobile\pt-BR\
   Windows 10: C:\Windows\WindowsMobile\pl-PL\
   Windows 10: C:\Windows\WindowsMobile\nl-NL\
   Windows 10: C:\Windows\WindowsMobile\nb-NO\
   Windows 10: C:\Windows\WindowsMobile\ko-KR\
   Windows 10: C:\Windows\WindowsMobile\ja-JP\
   Windows 10: C:\Windows\WindowsMobile\it-IT\
   Windows 10: C:\Windows\WindowsMobile\hu-HU\
   Windows 10: C:\Windows\WindowsMobile\fr-FR\
   Windows 10: C:\Windows\WindowsMobile\fi-FI\
   Windows 10: C:\Windows\WindowsMobile\es-ES\
   Windows 10: C:\Windows\WindowsMobile\en-US\
   Windows 10: C:\Windows\WindowsMobile\el-GR\
   Windows 10: C:\Windows\WindowsMobile\de-DE\
   Windows 10: C:\Windows\WindowsMobile\da-DK\
   Windows 10: C:\Windows\WindowsMobile\cs-CZ\
   
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.

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