3 Steps to Download and Fix Procinst.dll DLL Errors

Last Updated: 11/26/2023
[Time Needed for Reading: ~4-6 minutes]

The development of Microsoft® Windows® Operating System by Microsoft prompted the latest creation of procinst.dll. It is also known as a Processor Class Installer file (file extension DLL), which is classified as a type of Win32 DLL (Executable application) file.

procinst.dll was first released for Windows Vista Operating System on 11/08/2006 with Windows Vista. The latest file version for Windows 8.1 is v6.3.9600.17415 (winblue_r4.141028-1500) released on 10/18/2013. procinst.dll is bundled with the software package in Windows Vista, Windows 8.1, and Windows 8.

In this article, you will find detailed procinst.dll information, a DLL file troubleshooting guide, and a list of versions that are available for free download.

File Analysis Provided by Jason Geater (Author)

File Overview

General Information ^✻
File Name:	procinst.dll
File Extension:	DLL file extension
Description:	Processor Class Installer
Object File Type:	Executable application
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® Windows® Operating System
Legal Copyright:	© Microsoft Corporation. All rights reserved.

File Details
Character Set:	Unicode
Language Code:	English (U.S.)
File Flags:	(none)
File Flags Mask:	0x003f
Entry Point:	0x14a0
Code Size:	3584

View Other procinst.dll Information

File Info	Description
File Size:	8.5 kB
File Modification Date/Time:	2014:11:21 06:52:51+00:00
File Inode Change Date/Time:	2017:11:05 07:04:30+00:00
File Type:	Win32 DLL
MIME Type:	application/octet-stream
Machine Type:	Intel 386 or later, and compatibles
Time Stamp:	2014:10:29 01:02:12+00:00
PE Type:	PE32
Linker Version:	11.0
Code Size:	3584
Initialized Data Size:	4608
Uninitialized Data Size:	0
Entry Point:	0x14a0
OS Version:	6.3
Image Version:	6.3
Subsystem Version:	6.3
Subsystem:	Windows command line
File Version Number:	6.3.9600.17415
Product Version Number:	6.3.9600.17415
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:	Unicode
Company Name:	Microsoft Corporation
File Description:	Processor Class Installer
File Version:	6.3.9600.17415 (winblue_r4.141028-1500)
Internal Name:	ProcInst.dll
Legal Copyright:	© Microsoft Corporation. All rights reserved.
Original Filename:	ProcInst.dll
Product Name:	Microsoft® Windows® Operating System
Product Version:	6.3.9600.17415

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

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What are procinst.dll Error Messages?

Dynamic Link Library procinst.dll Errors

procinst.dll is considered a type of Dynamic Link Library (DLL) file. Dynamic Link Library files, like procinst.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 procinst.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 procinst.dll is attempted to be loaded either when Windows is starting up, or in some cases already running. Some of the most common procinst.dll errors include:

Access Violation at address - procinst.dll.
procinst.dll could not be found.
Cannot find C:\Windows\System32\procinst.dll.
Cannot register procinst.dll.
Cannot start Windows. A required component is missing: procinst.dll. Please install Windows again.
Failed to load procinst.dll.
The application has failed to start because procinst.dll was not found.
The file procinst.dll is missing or corrupt.
This application failed to start because procinst.dll was not found. Re-installing the application may fix this problem.

Your procinst.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, procinst.dll file corruption could be caused from a power outage when loading Windows, system crash while loading procinst.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 procinst.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 procinst.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 procinst.dll error, please proceed to the Step 2 below.

Step 2: Run SFC (System File Checker) to restore the corrupt or missing procinst.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 procinst.dll files (Windows XP, Vista, 7, 8, and 10):

Hit the Windows Start button
In the search box, type "cmd" but DO NOT PRESS "ENTER".
Press and hold "CTRL-Shift" on your keyboard while pressing "ENTER".
You'll be prompted with a permission dialog box.
In the box, click "YES".
You should have a black screen with a blinking cursor.
In that black screen, type "sfc /scannow" and hit "ENTER".
SFC will begin scanning for procinst.dll issues and any other system file problems.
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 procinst.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 procinst.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 procinst.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 procinst.dll file version. We maintain a comprehensive database of 100% malware-free procinst.dll files for every applicable version of Windows. Please follow the steps below to download and properly replace you file:

Locate your Windows operating system version in the list of below "Download procinst.dll Files".
Click the appropriate "Download Now" button and download your Windows file version.
Copy the file into the appropriate directory for your Windows version:

Windows Vista: C:\Windows\System32\
Windows 7: C:\Windows\System32\
Windows 8: C:\Windows\System32\
Windows 8.1: C:\Windows\System32\

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 8.1.

GEEK TIP : We must emphasize that reinstalling Windows will be a very time-consuming and advanced task to resolve procinst.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 procinst.dll Files (Malware-Tested 100% Clean)

CAUTION : We strongly advise against downloading and copying procinst.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 procinst.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 Vista

File Name

Software Version

File Version

Architecture

procinst.dll

6.0.6001.18000

6.0.6001.18000 (longhorn_rtm.080118-1840)

32-bit (x32)

Expand for Detailed File Information +

OS Version:	Windows Vista
Software:	Microsoft® Windows® Operating System
Software Version:	6.0.6001.18000
File Version:	6.0.6001.18000 (longhorn_rtm.080118-1840)
File Size:	9216
File Date:	01/21/2008
MD5 Checksum:	4c8b3561ed7ff4a89510965ebe2a11a0
SHA1 Checksum:	fa74504dc2811a2ce9a4ae06c3b0c231acaef469
SHA256 Checksum:	dab28352dff54a193739acb13a270e77ef6d03b6593a29c86f740c7276854047
CRC32:
File Directory Location:	C:\Windows\System32\

File Version, System, and Machine Information
File Type:	Win64 DLL
Image Version:	6.0
Initialized Data Size:	4608
Linker Version:	8.0
Machine Type:	AMD AMD64
PE Type:	PE32+
Subsystem:	Windows command line
Subsystem Version:	6.0
File Modification Date/Time:	01/21/2008

Windows 8.1

File Name

Software Version

File Version

Architecture

procinst.dll

6.3.9600.17415

6.3.9600.17415 (winblue_r4.141028-1500)

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 8.1
Software:	Microsoft® Windows® Operating System
Software Version:	6.3.9600.17415
File Version:	6.3.9600.17415 (winblue_r4.141028-1500)
File Size:	8704
File Date:	11/21/2014
MD5 Checksum:	2f78756d61edb5a554ec148906ab4c59
SHA1 Checksum:	fa78f67847df432f665d6b92ba00f18777adacf6
SHA256 Checksum:	be413cc9186eb4a80a5be2591a18ae56c8fdc5be7596fe206cc2b937ee6bac4a
CRC32:
File Directory Location:	C:\Windows\System32\

File Version, System, and Machine Information
File Type:	Win32 DLL
Image Version:	6.3
Initialized Data Size:	4608
Linker Version:	11.0
Machine Type:	Intel 386 or later, and compatibles
PE Type:	PE32
Subsystem:	Windows command line
Subsystem Version:	6.3
File Modification Date/Time:	11/21/2014

Windows 8

File Name

Software Version

File Version

Architecture

procinst.dll

6.2.9200.16384

6.2.9200.16384 (win8_rtm.120725-1247)

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 8
Software:	Microsoft® Windows® Operating System
Software Version:	6.2.9200.16384
File Version:	6.2.9200.16384 (win8_rtm.120725-1247)
File Size:	8704
File Date:	07/26/2012
MD5 Checksum:	ce51c6c3deded14fef5e08120a9dec33
SHA1 Checksum:	338bb7a6e1e91290a33d86228264277da2039006
SHA256 Checksum:	01962b9ddcfc94f00c90de1cd65c81679120d7b69728a6d1fa4fab53bc241206
CRC32:
File Directory Location:	C:\Windows\System32\

File Version, System, and Machine Information
File Type:	Win32 DLL
Image Version:	6.2
Initialized Data Size:	5120
Linker Version:	10.10
Machine Type:	Intel 386 or later, and compatibles
PE Type:	PE32
Subsystem:	Windows command line
Subsystem Version:	6.2
File Modification Date/Time:	07/26/2012

Windows 7

File Name

Software Version

File Version

Architecture

procinst.dll

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 7
File Size:	10240
MD5 Checksum:	f546a01b2f64970245fa5bb9fd6df921
SHA1 Checksum:	e9361ded39620126ce0b1db04801ec1f3cac0e5e
SHA256 Checksum:	2235efbf350b6be120a88dfc5a7c746a060bab9af9ebdbf4a44de8732c8368bf
CRC32:
File Directory Location:	C:\Windows\System32\

File Version, System, and Machine Information
There is no information available.

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