The Document Foundation LibreOffice DLL UAccCOM.dll

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

Last Updated: 11/27/2023
[Average Article Time to Read: 4.7 minutes]

UAccCOM.dll is considered a type of Dynamic Link Library file. It is most-commonly used in LibreOffice developed by The Document Foundation. It uses the DLL file extension and is considered a Win64 DLL (Executable application) file.

UAccCOM.dll was first developed on 11/18/2018 for the Windows 10 Operating System in Apache OpenOffice 4.1.6. The latest file update released for LibreOffice 6.2.5 was on 07/04/2019 [file version 6.3.4.2].

Please see below for more detailed information, DLL file troubleshooting instructions, and free downloads of different versions of UAccCOM.dll.

File Analysis Provided by Jason Geater (Author)

File Overview

General Information ^✻
File Name:	UAccCOM.dll
File Extension:	DLL file extension
Object File Type:	Executable application
File Type:	Dynamic Link Library
Description:	Dynamic Link Library
File Operating System:	Windows NT 32-bit
MIME Type:	application/octet-stream
User Popularity Rating:

Developer and Software Information
Software Developer:	The Document Foundation
Software Program:	LibreOffice
Legal Copyright:	Copyright © 2000-2019 by LibreOffice contributors. All rights reserved.

File Details
Character Set:	Windows, Latin1
Language Code:	English (U.S.)
File Flags:	(none)
File Flags Mask:	0x003f
Entry Point:	0x35994
Code Size:	247296

View Other UAccCOM.dll Information

File Info	Description
File Size:	441 kB
File Modification Date/Time:	2019:12:24 03:43:05+00:00
File Type:	Win64 DLL
MIME Type:	application/octet-stream
Machine Type:	AMD AMD64
Time Stamp:	2019:12:06 17:20:53+00:00
PE Type:	PE32+
Linker Version:	14.16
Code Size:	247296
Initialized Data Size:	197632
Uninitialized Data Size:	0
Entry Point:	0x35994
OS Version:	6.1
Image Version:	0.0
Subsystem Version:	6.1
Subsystem:	Windows command line
File Version Number:	6.3.4.2
Product Version Number:	6.3.4.2
File Flags Mask:	0x003f
File Flags:	(none)
File OS:	Windows NT 32-bit
Object File Type:	Executable application
File Subtype:	0
Language Code:	English (U.S.)
Character Set:	Windows, Latin1
Company Name:	The Document Foundation
File Version:	6.3.4.2
Internal Name:	UAccCOM
Legal Copyright:	Copyright © 2000-2019 by LibreOffice contributors. All rights reserved.
Product Name:	LibreOffice
Product Version:	6.3.4.2

^✻ Portions of file data provided by Exiftool (Phil Harvey) distributed under the Perl Artistic License.

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What are UAccCOM.dll Error Messages?

Dynamic Link Library UAccCOM.dll Errors

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

Access Violation at address - UAccCOM.dll.
UAccCOM.dll could not be found.
Cannot find C:\Program Files\LibreOffice\program\UAccCOM.dll.
Cannot register UAccCOM.dll.
Cannot start LibreOffice. A required component is missing: UAccCOM.dll. Please install LibreOffice again.
Failed to load UAccCOM.dll.
The application has failed to start because UAccCOM.dll was not found.
The file UAccCOM.dll is missing or corrupt.
This application failed to start because UAccCOM.dll was not found. Re-installing the application may fix this problem.

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

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

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

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

You can uninstall LibreOffice software by following these instructions (Windows XP, Vista, 7, 8, and 10):

Hit the Windows Start button
In the search box, type "Uninstall" and press "ENTER".
In the search results, find and click "Add or Remove Programs"
Find the entry for LibreOffice 6.2.5 and click "Uninstall"
Follow the prompts for uninstallation.

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

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

LibreOffice 6.2.5

The Document Foundation

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 UAccCOM.dll error messages that are encountered can be contributed to an outdated Windows Operating System. To run Windows Update, please follow these easy steps:

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

If Windows Update failed to resolve the UAccCOM.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 UAccCOM.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 UAccCOM.dll file version. We maintain a comprehensive database of 100% malware-free UAccCOM.dll files for every applicable version of LibreOffice. Please follow the steps below to download and properly replace you file:

Locate your Windows operating system version in the list of below "Download UAccCOM.dll Files".
Click the appropriate "Download Now" button and download your Windows file version.
Copy this file to the appropriate LibreOffice folder location:

Windows 10: C:\Program Files\LibreOffice\program\
Windows 10: C:\Program Files (x86)\OpenOffice 4\program\
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 UAccCOM.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 UAccCOM.dll Files (Malware-Tested 100% Clean)

CAUTION : We strongly advise against downloading and copying UAccCOM.dll to your appropriate Windows system directory. The Document Foundation typically does not release LibreOffice 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 UAccCOM.dll and all other DLL files for LibreOffice. An incorrectly installed DLL file may create system instability and could cause your program or operating system to stop functioning altogether. Proceed with caution.

LibreOffice 6.2.5

File Name

Software Version

File Version

Architecture

UAccCOM.dll

6.3.4.2

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 10
Software:	LibreOffice
Software Version:	6.3.4.2
File Version:	6.3.4.2
File Size:	451376
File Date:	12/24/2019
MD5 Checksum:	dbc5ad33241cfa16c4474c7b489b240d
SHA1 Checksum:	0903e1ca2989ecb912b53b412befc6b5709a3296
SHA256 Checksum:	758a43309e99e0c938bea8ce52e9f594f90465c6fee488dd6aae910dade3c813
CRC32:
File Directory Location:	C:\Program Files\LibreOffice\program\

File Version, System, and Machine Information
File Type:	Win64 DLL
Image Version:	0.0
Initialized Data Size:	197632
Linker Version:	14.16
Machine Type:	AMD AMD64
PE Type:	PE32+
Subsystem:	Windows command line
Subsystem Version:	6.1
File Modification Date/Time:	12/24/2019

Apache OpenOffice 4.1.6

File Name

Software Version

File Version

Architecture

UAccCOM.dll

4.0.9790.500

4.00.9790

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 10
Software Version:	4.0.9790.500
File Version:	4.00.9790
File Size:	263680
File Date:	10/14/2019
MD5 Checksum:	100d8b8ea1197d1ac1b4b19ee08b7408
SHA1 Checksum:	e4bc8cf53aab4cf78e5d6f7345a90adb2e942e89
SHA256 Checksum:	49a5637d70076f7d0416d17a3be3bd3e7aeacd5cf4740dab6b9b3e6594c98bac
CRC32:
File Directory Location:	C:\Program Files (x86)\OpenOffice 4\program\

File Version, System, and Machine Information
File Type:	Win32 DLL
Image Version:	0.0
Initialized Data Size:	138240
Linker Version:	9.0
Machine Type:	Intel 386 or later, and compatibles
PE Type:	PE32
Subsystem:	Windows command line
Subsystem Version:	5.0
File Modification Date/Time:	10/14/2019

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Files Related to UAccCOM.dll

DLL Files Related to UAccCOM.dll

File Name	Description	Software Program (Version)	File Size (bytes)	File Location
Microsoft.Support.SDK.dll	Dynamic Link Library	LibreOffice 6.2.5	1512448	C:\Program Files (x86)\Common Files\microsoft s...
api-ms-win-core-locali...	ApiSet Stub DLL	Microsoft® Windows® Operating System (10.0.17134.12)	13672	C:\Users\Tester\AppData\Local\
api-ms-win-core-heap-l...	ApiSet Stub DLL	Microsoft® Windows® Operating System (10.0.17134.12)	11112	C:\$WINDOWS.~BT\Sources\Boot\EFI\nl-NL\
qwindows.dll	C++ Application Development Framework	Qt5 (5.11.1.0)	1164648	C:\Users\Tester\AppData\Local\
gielo.dll	Dynamic Link Library	LibreOffice (6.3.4.2)	447792	C:\Windows\Prefetch\

Other Files Related to UAccCOM.dll

File Name	Description	Software Program (Version)	File Size (bytes)	File Location
setupact.log	Log	LibreOffice 6.2.5	16082	C:\Windows\System32\Sysprep\Panther\
setupapi.dev.log	Log	LibreOffice 6.2.5	684126	C:\Windows\inf\
api-ms-win-core-dateti...	ApiSet Stub DLL	Microsoft® Windows® Operating System (10.0.17134.12)	11112	C:\Users\Tester\AppData\Local\Microsoft\OneDriv...
ShutdownPerformanceDia...	Binary Disk Image	LibreOffice 6.2.5	9694	C:\Windows\System32\wdi\
BootPerformanceDiagnos...	Binary Disk Image	LibreOffice 6.2.5	29416	C:\Windows\System32\wdi\

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