Microsoft Microsoft Silverlight DLL xapauthenticodesip.dll

How to Download and Fix Xapauthenticodesip.dll DLL Errors

Last Updated: 11/24/2024
[Reading Time Required: 3.5 minutes]

xapauthenticodesip.dll is considered a type of 5.1.50918.0 file. It is most-commonly used in XAP Authenticode Subject Interface Package developed by Microsoft. It uses the DLL file extension and is considered a Win32 DLL (Dynamic link library) file.

xapauthenticodesip.dll was initially released with Microsoft Silverlight 5.1.50918.0 on 01/15/2019 for the Windows 10 Operating System. This file version is latest update offered from Microsoft, according to our records.

Continue reading below to discover detailed file information, DLL file troubleshooting, and free downloads of several versions of xapauthenticodesip.dll.

File Analysis Provided by Jason Geater (Author)


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File Overview


General Information ✻
File Name: xapauthenticodesip.dll
File Extension: DLL file extension
Description: 5.1.50918.0
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: XAP Authenticode Subject Interface Package
Legal Copyright: © Microsoft Corporation. All rights reserved.
File Details
Character Set: Windows, Latin1
Language Code: English (U.S.)
File Flags: (none)
File Flags Mask: 0x003f
Entry Point: 0x4a3e
Code Size: 44032
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What are xapauthenticodesip.dll Error Messages?


Dynamic Link Library xapauthenticodesip.dll Errors

xapauthenticodesip.dll is considered a type of Dynamic Link Library (DLL) file. Dynamic Link Library files, like xapauthenticodesip.dll, are essentially a "guide book" that stores information and instructions for executable (EXE) files - like agcp.exe - to follow. These files were created so that multiple programs (eg. Microsoft Silverlight) could share the same xapauthenticodesip.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 xapauthenticodesip.dll is attempted to be loaded either when Microsoft Silverlight is starting up, or in some cases already running. Some of the most common xapauthenticodesip.dll errors include:

Your xapauthenticodesip.dll file could be missing due to accidental deletion, uninstalled as a shared file of another program (shared with Microsoft Silverlight), or deleted by a malware infection. Furthermore, xapauthenticodesip.dll file corruption could be caused from a power outage when loading Microsoft Silverlight, system crash while loading xapauthenticodesip.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.

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How to Fix xapauthenticodesip.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 xapauthenticodesip.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 xapauthenticodesip.dll error, please proceed to the Step 2 below.

Step 2: If recently installed Microsoft Silverlight (or related software), uninstall then try reinstalling Microsoft Silverlight software.

You can uninstall Microsoft Silverlight 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 Silverlight 5.1.50918.0 and click "Uninstall"
  5. Follow the prompts for uninstallation.

After the software has been fully uninstalled, restart your PC and reinstall Microsoft Silverlight software.

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

Microsoft Silverlight 5.1.50918.0

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 xapauthenticodesip.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 xapauthenticodesip.dll error message, please proceed to next step. Please note that this final step is recommended for advanced PC users only.

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If Those Steps Fail: Download and Replace Your xapauthenticodesip.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 xapauthenticodesip.dll file version. We maintain a comprehensive database of 100% malware-free xapauthenticodesip.dll files for every applicable version of Microsoft Silverlight. 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 xapauthenticodesip.dll Files".
  2. Click the appropriate "Download Now" button and download your Windows file version.
  3. Copy this file to the appropriate Microsoft Silverlight folder location:
    Windows 10: C:\Program Files (x86)\Microsoft Silverlight\
  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 xapauthenticodesip.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.

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


CAUTION : We strongly advise against downloading and copying xapauthenticodesip.dll to your appropriate Windows system directory. Microsoft typically does not release Microsoft Silverlight 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 xapauthenticodesip.dll and all other DLL files for Microsoft Silverlight. 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
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Files Related to xapauthenticodesip.dll


DLL Files Related to xapauthenticodesip.dll

File Name Description Software Program (Version) File Size (bytes) File Location
npctrl.dll 5.1.50918.0 Silverlight Plug-In (5.1.50918.0) 1213592 C:\Windows\System32\sru\
system.resources.dll .NET Framework Microsoft® Silverlight (5.1.50918.00) 11512 C:\Windows\System32\sru\
mscorrc.dll Πόροι χρόνου εκτέλεσης για το Microsoft .NET Microsoft® Silverlight (5.1.50918.0) 10472 C:\Windows\inf\
Qt5QuickTemplates2.dll C++ Application Development Framework Qt5 (5.11.1.0) 784744 C:\Users\Tester\AppData\Local\Microsoft\Windows\
mscorlib.resources.dll Microsoft Common Language Runtime Class Library Microsoft® Silverlight (5.1.50918.00) 12032 C:\Windows\System32\sru\

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File Name Description Software Program (Version) File Size (bytes) File Location
WWAN_profile_v1.xsd XML Schema Definition Windows 8 6201 C:\Windows\L2Schemas\
WLANAP_profile_v1.xsd XML Schema Definition Windows 8.1 7548 C:\Windows\L2Schemas\
WLAN_profile_v1.xsd XML Schema Definition Windows 7 15591 C:\Windows\L2Schemas\
WLAN_profile_v1.xsd XML Schema Definition Windows 8 15591 C:\Windows\L2Schemas\
LAN_profile_v1.xsd XML Schema Definition Windows 8 2241 C:\Windows\L2Schemas\


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