Troubleshoot Vcs.dll Issues (Free Download)

Last Updated: 11/25/2024
[Time Required for Reading: 3.5 minutes]

vcs.dll, also known as a Variational Constraint Solver Library file, was created by Autodesk, Inc. for the development of Autodesk VCS. DLL files fall under under the Win64 DLL (Dynamic link library) file type category.

The initial introduction of vcs.dll released in PL/SQL Developer 10.0.2 was for Windows 10 on 04/26/2013. The most recent version [file version 180.8.5.0] was introduced on 10/24/2018 for AutoCAD 2019.

Please continue reading to find your correct vcs.dll file version download (free), detailed file information, and DLL file troubleshooting instructions.

File Analysis Provided by Jason Geater (Author)

File Overview

General Information ^✻
File Name:	vcs.dll
File Extension:	DLL file extension
Description:	Variational Constraint Solver Library
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:	Autodesk, Inc.
Software Program:	Autodesk VCS
Legal Copyright:	Copyright 2010-2017 by Autodesk, Inc.

File Details
Character Set:	Windows, Latin1
Language Code:	Neutral
File Flags:	(none)
File Flags Mask:	0x003f
Entry Point:	0x18e708
Code Size:	1709568

View Other vcs.dll Information

File Info	Description
File Size:	2.3 MB
File Modification Date/Time:	2020:03:04 13:09:15+00:00
File Type:	Win64 DLL
MIME Type:	application/octet-stream
Machine Type:	AMD AMD64
Time Stamp:	2018:01:08 05:39:05+00:00
PE Type:	PE32+
Linker Version:	14.0
Code Size:	1709568
Initialized Data Size:	675840
Uninitialized Data Size:	0
Entry Point:	0x18e708
OS Version:	6.0
Image Version:	0.0
Subsystem Version:	6.0
Subsystem:	Windows GUI
File Version Number:	180.8.5.0
Product Version Number:	180.0.0.0
File Flags Mask:	0x003f
File Flags:	(none)
File OS:	Windows NT 32-bit
Object File Type:	Dynamic link library
File Subtype:	0
Language Code:	Neutral
Character Set:	Windows, Latin1
Company Name:	Autodesk, Inc.
File Description:	Variational Constraint Solver Library
File Version:	180.8.5.0
Internal Name:	VCS
Legal Copyright:	Copyright 2010-2017 by Autodesk, Inc.
Product Name:	Autodesk VCS
Product Version:	180

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

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What are vcs.dll Error Messages?

Dynamic Link Library vcs.dll Errors

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

Access Violation at address - vcs.dll.
vcs.dll could not be found.
Cannot find C:\Autodesk\WI\Autodesk AutoCAD 2020\x64\acad\PF\Root\IVS\Bin\vcs.dll.
Cannot register vcs.dll.
Cannot start AutoCAD. A required component is missing: vcs.dll. Please install AutoCAD again.
Failed to load vcs.dll.
The application has failed to start because vcs.dll was not found.
The file vcs.dll is missing or corrupt.
This application failed to start because vcs.dll was not found. Re-installing the application may fix this problem.

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

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

You can uninstall AutoCAD 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 AutoCAD 2019 and click "Uninstall"
Follow the prompts for uninstallation.

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

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

AutoCAD 2019

Autodesk, Inc.

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 vcs.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 vcs.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 vcs.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 vcs.dll file version. We maintain a comprehensive database of 100% malware-free vcs.dll files for every applicable version of AutoCAD. Please follow the steps below to download and properly replace you file:

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

Windows 10: C:\Program Files (x86)\PLSQL Developer\PlugIns\
Windows 10: C:\Autodesk\WI\Autodesk AutoCAD 2020\x64\acad\PF\Root\IVS\Bin\
Windows 10: C:\Program Files\Autodesk\AutoCAD 2020\Inventor Server\Bin\
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 vcs.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 vcs.dll Files (Malware-Tested 100% Clean)

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

PL/SQL Developer 10.0.2

File Name

Software Version

File Version

Architecture

vcs.dll

1.2.4.0

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 10
Software Version:	1.2.4.0
File Version:	1.2.4.0
File Size:	1199104
File Date:	01/13/2020
MD5 Checksum:	fd1e7d81566787c8920030492e5f2487
SHA1 Checksum:	3178db0eedccbe43ac9ec86092c66a7ac7e917f8
SHA256 Checksum:	f44ea6acfb28adffd38b301fad187b5e374088407d08f7a8723eeaf00d7a4378
CRC32:
File Directory Location:	C:\Program Files (x86)\PLSQL Developer\PlugIns\

File Version, System, and Machine Information
File Type:	Win32 DLL
Image Version:	0.0
Initialized Data Size:	198144
Linker Version:	2.25
Machine Type:	Intel 386 or later, and compatibles
PE Type:	PE32
Subsystem:	Windows GUI
Subsystem Version:	4.0
File Modification Date/Time:	01/13/2020

AutoCAD 2019

File Name

Software Version

File Version

Architecture

vcs.dll

180.0.0.0

180.8.5.0

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 10
Software:	Autodesk VCS
Software Version:	180.0.0.0
File Version:	180.8.5.0
File Size:	2391048
File Date:	03/04/2020
MD5 Checksum:	5daeb2745cebe2dae8147872cc715735
SHA1 Checksum:	7b628bdc1fb3f933fd0506393fd3bdacafe61b7e
SHA256 Checksum:	a657773684f1b905b2b4170e53983ff67c7af998c72cc987e6f56b136dc8a583
CRC32:
File Directory Location:	C:\Autodesk\WI\Autodesk AutoCAD 2020\x64\acad\ ... C:\Program Files\Autodesk\AutoCAD 2020\Invento ...

File Version, System, and Machine Information
File Type:	Win64 DLL
Image Version:	0.0
Initialized Data Size:	675840
Linker Version:	14.0
Machine Type:	AMD AMD64
PE Type:	PE32+
Subsystem:	Windows GUI
Subsystem Version:	6.0
File Modification Date/Time:	03/04/2020

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Files Related to vcs.dll

DLL Files Related to vcs.dll

File Name	Description	Software Program (Version)	File Size (bytes)	File Location
Qt5Sensors_Ad_5.dll	C++ application development framework.	Qt5 (5.5.0.0)	159784	C:\Program Files\WindowsApps\Microsoft.XboxIden...
RxAsmService.dll	AsmService	Autodesk, Inc. AsmService (Autodesk Inventor 2020)	484288	C:\Program Files\WindowsApps\Microsoft.WindowsS...
MsiKeyFile_PDFOSNAP.dll	AutoCAD component	AutoCAD (23.1.47.0.0)	9088	C:\Program Files\WindowsApps\Microsoft.GetHelp_...
MsiKeyFile_POINTCLOUDL...	AutoCAD component	AutoCAD (23.1.47.0.0)	9088	C:\Program Files\WindowsApps\Microsoft.GetHelp_...
MsiKeyFile_LINEFADINGL...	AutoCAD component	AutoCAD (23.1.47.0.0)	9088	C:\Program Files\WindowsApps\Deleted\Microsoft....

Other Files Related to vcs.dll

File Name	Description	Software Program (Version)	File Size (bytes)	File Location
CBS.log	Log	AutoCAD 2019	997404	C:\Windows\Logs\CBS\
setupact.log	Log	AutoCAD 2019	62521	C:\Windows\Panther\UnattendGC\
SA.DAT	Game Data	Autodesk DWF Viewer 7	6	C:\WINDOWS\Tasks\
SA.DAT	Game Data	DWG TrueView 2019	6	C:\WINDOWS\Tasks\
volsnap.PNF	Precompiled INF	DWG TrueView 2019	5164	C:\Windows\inf\

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