How to Fix Issues with Mso99Lwin32client.dll (Free Download)

Last Updated: 09/16/2018
[Time Required for Reading: 3.5 minutes]

DLL files such as Mso99Lwin32client.dll are categorized as Win32 DLL (Dynamic link library) files. As a Microsoft Office 2016 component file, it was created for use in Microsoft Office 2016 by Microsoft.

Mso99Lwin32client.dll was first developed on 07/29/2015 in the Windows 10 Operating System for Windows 10. This is not only most recent release from Microsoft, but it's the only version known in existence.

Below, you find comprehensive file information, instructions for simple DLL file troubleshooting, and list of free Mso99Lwin32client.dll downloads for each available file version.

Recommended Download: Fix Mso99Lwin32client.dll / Windows-related registry issues with RocketPC.

Compatible with Windows 10, 8, 7, Vista, XP and 2000

Average User Rating


Optional Offer for RocketPC by Solvusoft
| EULA | Privacy Policy | Terms | Uninstall

File Overview

General Information
File Name: Mso99Lwin32client.dll
File Extension: DLL file extension
Description: Microsoft Office 2016 component
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 Office 2016
Developer: Microsoft
Software: Windows
Software Version: 10
File Details
Character Set: Windows, Latin1
Language Code: English (U.S.)
File Flags: (none)
File Flags Mask: 0x003f
Entry Point: 0x1000
Code Size: 3744256

What are Mso99Lwin32client.dll Error Messages?

Dynamic Link Library Mso99Lwin32client.dll Errors

Mso99Lwin32client.dll is considered a type of Dynamic Link Library (DLL) file. Dynamic Link Library files, like Mso99Lwin32client.dll, are essentially a "guide book" that stores information and instructions for executable (EXE) files - like sapisvr.exe - to follow. These files were created so that multiple programs (eg. Windows) could share the same Mso99Lwin32client.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 Mso99Lwin32client.dll is attempted to be loaded either when Windows is starting up, or in some cases already running. Some of the most common Mso99Lwin32client.dll errors include:

Your Mso99Lwin32client.dll file could be missing due to accidental deletion, uninstalled as a shared file of another program (shared with Windows), or deleted by a malware infection. Furthermore, Mso99Lwin32client.dll file corruption could be caused from a power outage when loading Windows, system crash while loading Mso99Lwin32client.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 Mso99Lwin32client.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 Mso99Lwin32client.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 Mso99Lwin32client.dll error, please proceed to the Step 2 below.

Step 2: Run SFC (System File Checker) to restore the corrupt or missing Mso99Lwin32client.dll file.

System File Checker is a utility included with every Windows version that allows you scan and restore corrupted system files. Use the SFC tool to fix missing or corrupt Mso99Lwin32client.dll files (Windows XP, Vista, 7, 8, and 10):

  1. Hit the Windows Start button
  2. In the search box, type "cmd" but DO NOT PRESS "ENTER".
  3. Press and hold "CTRL-Shift" on your keyboard while pressing "ENTER".
  4. You'll be prompted with a permission dialog box.
  5. In the box, click "YES".
  6. You should have a black screen with a blinking cursor.
  7. In that black screen, type "sfc /scannow" and hit "ENTER".
  8. SFC will begin scanning for Mso99Lwin32client.dll issues and any other system file problems.
  9. Follow any on-screen commands to complete the process.

Please be aware that this scan might take a while, so please be patient while it is working.

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

sfc /scannow

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 Mso99Lwin32client.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 Mso99Lwin32client.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 Mso99Lwin32client.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 Mso99Lwin32client.dll file version. We maintain a comprehensive database of 100% malware-free Mso99Lwin32client.dll files for every applicable version of Windows. 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 Mso99Lwin32client.dll Files".
  2. Click the appropriate "Download Now" button and download your Windows file version.
  3. Copy the file into the appropriate directory for your Windows version:

  4. Windows 10: C:\Windows\InfusedApps\Packages\Microsoft.MicrosoftOfficeHub_17.8010.5926.0_x86__8wekyb3d8bbwe\VFS\ProgramFilesCommonX86\Microsoft Shared\OFFICE16\
  5. 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 Mso99Lwin32client.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 Mso99Lwin32client.dll Files (Malware-Tested 100% Clean)

CAUTION : We strongly advise against downloading and copying Mso99Lwin32client.dll to your appropriate Windows system directory. Microsoft typically does not release Windows 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 Mso99Lwin32client.dll and all other DLL files for Windows. 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 Mso99Lwin32client.dll

DLL Files Related to Mso99Lwin32client.dll

File Name Description Software Program (Version) File Size (bytes) File Location
mscpx32r.dLL Dynamic Link Library Windows Vista 8192 C:\Windows\SysWOW64\
api-ms-win-security-sd... ApiSet Stub DLL Microsoft® Windows® Operating System (10.0.15063.0) 11168 C:\Windows\System32\downlevel\
packager.dll Dynamic Link Library Windows Vista 67584 C:\Windows\SysWOW64\
bitsprx3.dll Background Intelligent Transfer Service 2.0 Proxy Microsoft® Windows® Operating System (7.0.6000.16386) 13312 C:\Windows\System32\
xpsp1res.dll Service Pack 1 Messages Microsoft(R) Windows(R) Operating System (5.1.2600.5512) 161280 C:\WINDOWS\system32\mui\0804\

Other Files Related to Mso99Lwin32client.dll

File Name Description Software Program (Version) File Size (bytes) File Location
l2057.wwd Microsoft Works Wizard Windows 8 20510 C:\Windows\Speech\Engines\SR\en-GB\
HCRView.html Hypertext Markup Language Windows 8 6269 C:\Program Files\WindowsApps\Microsoft.XboxLIVE...
vsmraid.inf Setup Information Windows 7 5394 C:\Windows\inf\
SkiResorts.html Hypertext Markup Language Windows 8.1 591 C:\Program Files\WindowsApps\Microsoft.BingWeat...
capisp.dll.mui Myriad User Instrument Windows 7 2560 C:\Windows\SysWOW64\en-US\


Optional Offer for RocketPC by Solvusoft | EULA | Privacy Policy | Terms | Uninstall

Browse Other File Extensions in Alphabetical Order :   # A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

You are downloading trial software. The purchase of a one-year software subscription at the price of $39.95 USD is required to unlock all software features. Subscription auto-renews at the end of the term (Learn more). By clicking the "Start Download" button above and installing "Software", I acknowledge I have read and agree to the Solvusoft End User License Agreement and Privacy Policy.