Compact Tiff Viewer DLL psapi.dll

How to Fix Psapi.dll Problems and Download Updates

Last Updated: 11/26/2024
[Average Article Time to Read: 4.7 minutes]

psapi.dll uses the DLL file extension, which is more specifically known as a Process Status Helper file. It is classified as a Win32 DLL (Dynamic link library) file, created for Microsoft(R) Windows NT(TM) Operating System by Compact.

The first version of psapi.dll for Windows Vista was introduced on 11/08/2006 in Windows Vista. The most recent version [file version 4.00] was introduced on 10/10/2005 for Tiff Viewer 1. psapi.dll is included in Tiff Viewer 1, Winstep Nexus Dock 19.2, and War Rock Client 20111018.

In this article, you will find detailed psapi.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:	psapi.dll
File Extension:	DLL file extension
Description:	Process Status Helper
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(R) Windows NT(TM) Operating System
Legal Copyright:	Copyright (C) Microsoft Corp. 1981-1996

File Details
Character Set:	Unicode
Language Code:	English (U.S.)
File Flags:	(none)
File Flags Mask:	0x003f
Entry Point:	0x2837
Code Size:	8192

View Other psapi.dll Information

File Info	Description
File Size:	18 kB
File Modification Date/Time:	2020:02:21 14:05:40+00:00
File Type:	Win32 DLL
MIME Type:	application/octet-stream
Machine Type:	Intel 386 or later, and compatibles
Time Stamp:	1996:07:26 19:20:26+00:00
PE Type:	PE32
Linker Version:	3.10
Code Size:	8192
Initialized Data Size:	17920
Uninitialized Data Size:	0
Entry Point:	0x2837
OS Version:	4.0
Image Version:	4.0
Subsystem Version:	4.0
Subsystem:	Windows command line
File Version Number:	4.0.1371.1
Product Version Number:	4.0.1371.1
File Flags Mask:	0x003f
File Flags:	(none)
File OS:	Windows NT 32-bit
Object File Type:	Dynamic link library
File Subtype:	0
Language Code:	English (U.S.)
Character Set:	Unicode
Company Name:	Microsoft Corporation
File Description:	Process Status Helper
File Version:	4.00
Internal Name:	PSAPI
Legal Copyright:	Copyright (C) Microsoft Corp. 1981-1996
Product Name:	Microsoft(R) Windows NT(TM) Operating System
Product Version:	4.00

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

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What are psapi.dll Error Messages?

Dynamic Link Library psapi.dll Errors

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

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

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

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

You can uninstall Tiff Viewer 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 Tiff Viewer 1 and click "Uninstall"
Follow the prompts for uninstallation.

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

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

Tiff Viewer 1

Compact

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

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

Windows XP: C:\WINDOWS\system32\dllcache\
Windows XP: C:\Windows\System32\
Windows Vista: C:\Windows\System32\
Windows Vista: C:\Windows\SysWOW64\
Windows 7: C:\Windows\System32\
Show 7 more directories +
Windows 7: C:\Windows\SysWOW64\
Windows 8: C:\Windows\System32\
Windows 8.1: C:\Windows\System32\
Windows 10: C:\Program Files (x86)\Winstep\
Windows 10: C:\DotNet\Win\System\
Windows 10: C:\Program Files (x86)\GamersFirst\War Rock\data\HShield\
Windows 10: 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 10.

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

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

Winstep Nexus Dock 19.2

File Name

Software Version

File Version

Architecture

psapi.dll

4.0.1280.1

4.00

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 10
Software:	Microsoft(R) Windows NT(TM) Operating System
Software Version:	4.0.1280.1
File Version:	4.00
File Size:	45136
File Date:	10/31/2019
MD5 Checksum:	070191a7ab7326d59be5fa8304ae1eb7
SHA1 Checksum:	00f6ffafbbb9579148fc3327b1ddd43869abd864
SHA256 Checksum:	21ad4009566f023c1d0b2d9f6d78024e42378960d14d11726d92fb81ce276dbc
CRC32:
File Directory Location:	C:\Program Files (x86)\Winstep\

File Version, System, and Machine Information
File Type:	Win32 DLL
Image Version:	4.0
Initialized Data Size:	29696
Linker Version:	3.10
Machine Type:	Intel 386 or later, and compatibles
PE Type:	PE32
Subsystem:	Windows command line
Subsystem Version:	4.0
File Modification Date/Time:	10/31/2019

Tiff Viewer 1

File Name

Software Version

File Version

Architecture

psapi.dll

4.0.1371.1

4.00

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 10
Software:	Microsoft(R) Windows NT(TM) Operating System
Software Version:	4.0.1371.1
File Version:	4.00
File Size:	18192
File Date:	02/21/2020
MD5 Checksum:	b3d22a483875a61cb2060c7d518effc2
SHA1 Checksum:	d9bf5f0b6c1138281bb45e4cfebec2c4d9753fb2
SHA256 Checksum:	d88ad399f7dc2d4830e7af1be3bfbf45aaf75e309f0b6afd8a9c4025bf19930e
CRC32:
File Directory Location:	C:\DotNet\Win\System\

File Version, System, and Machine Information
File Type:	Win32 DLL
Image Version:	4.0
Initialized Data Size:	17920
Linker Version:	3.10
Machine Type:	Intel 386 or later, and compatibles
PE Type:	PE32
Subsystem:	Windows command line
Subsystem Version:	4.0
File Modification Date/Time:	02/21/2020

War Rock Client 20111018

File Name

Software Version

File Version

Architecture

psapi.dll

5.2.3790.1830

5.2.3790.1830 (srv03_sp1_rtm.050324-1447)

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 10
Software:	Microsoft® Windows® Operating System
Software Version:	5.2.3790.1830
File Version:	5.2.3790.1830 (srv03_sp1_rtm.050324-1447)
File Size:	20480
File Date:	10/12/2019
MD5 Checksum:	29d44581ba9b680ec4e6d91000688c46
SHA1 Checksum:	84b716ccb062236f8bdbcc8f3dc616878ca83846
SHA256 Checksum:	4cf7a69c4a63a7c1ec64f647309a643f83cf48b3b7caee023616680b59136dd1
CRC32:
File Directory Location:	C:\Program Files (x86)\GamersFirst\War Rock\da ...

File Version, System, and Machine Information
File Type:	Win32 DLL
Image Version:	5.2
Initialized Data Size:	16384
Linker Version:	7.10
Machine Type:	Intel 386 or later, and compatibles
PE Type:	PE32
Subsystem:	Windows command line
Subsystem Version:	4.0
File Modification Date/Time:	10/12/2019

Windows 10

File Name

Software Version

File Version

Architecture

psapi.dll

10.0.15063.0

10.0.15063.0 (WinBuild.160101.0800)

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 10
Software:	Microsoft® Windows® Operating System
Software Version:	10.0.15063.0
File Version:	10.0.15063.0 (WinBuild.160101.0800)
File Size:	17112
File Date:	03/18/2017
MD5 Checksum:	8a03d0bf444f6d37c35a48af52c68061
SHA1 Checksum:	b042fe751bc2ee039be5a1d9a646e204b7422a67
SHA256 Checksum:	587614abc54b219977f33cae948b5bec3ae5ca59ca7b01a518bfc25059ac3eac
CRC32:
File Directory Location:	C:\Windows\System32\

File Version, System, and Machine Information
File Type:	Win32 DLL
Image Version:	10.0
Initialized Data Size:	4608
Linker Version:	14.10
Machine Type:	Intel 386 or later, and compatibles
PE Type:	PE32
Subsystem:	Windows command line
Subsystem Version:	10.0
File Modification Date/Time:	03/18/2017

Windows XP

File Name

Software Version

File Version

Architecture

psapi.dll

5.1.2600.5512

5.1.2600.5512 (xpsp.080413-2105)

32-bit (x32)

Expand for Detailed File Information +

OS Version:	Windows XP
Software:	Microsoft® Windows® Operating System
Software Version:	5.1.2600.5512
File Version:	5.1.2600.5512 (xpsp.080413-2105)
File Size:	23040
File Date:	04/14/2008
MD5 Checksum:	9cfcb3ca3d83b4eaa133f0644a2c6f31
SHA1 Checksum:	b31a80d13c4e9dc5409f43c1b146ed2ff6df3f1b
SHA256 Checksum:	cc0a76b55b38183b8c6141c290d1858a9d118333c804784ab305fe76a0fce775
CRC32:
File Directory Location:	C:\WINDOWS\system32\dllcache\ C:\Windows\System32\

File Version, System, and Machine Information
File Type:	Win32 DLL
Image Version:	5.1
Initialized Data Size:	15360
Linker Version:	7.10
Machine Type:	Intel 386 or later, and compatibles
PE Type:	PE32
Subsystem:	Windows command line
Subsystem Version:	4.0
File Modification Date/Time:	04/14/2008

Windows Vista

File Name

Software Version

File Version

Architecture

psapi.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:	16896
File Date:	01/21/2008
MD5 Checksum:	aef2d8b0b518a5623fc5f9832f622677
SHA1 Checksum:	38af7b600d258db689165bf7d369684fe75a9075
SHA256 Checksum:	f615dd650b3ade5b9cbab06466f723267a963ebfa58d5e2e4ee13f1c03673b2b
CRC32:
File Directory Location:	C:\Windows\System32\

File Version, System, and Machine Information
File Type:	Win64 DLL
Image Version:	6.0
Initialized Data Size:	7680
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

psapi.dll

32-bit (x32)

Expand for Detailed File Information +

OS Version:	Windows Vista
File Size:	12288
MD5 Checksum:	93a1732f7f997e36a5c3893539e2ff02
SHA1 Checksum:	a245f91c706047927ec6856547c931c461f79fec
SHA256 Checksum:	40b6f7a67f90e5d9948385418bd22bbd29de86a151b35d1001081a61ca5fc612
CRC32:
File Directory Location:	C:\Windows\SysWOW64\

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

Windows 8.1

File Name

Software Version

File Version

Architecture

psapi.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:	16504
File Date:	11/21/2014
MD5 Checksum:	f4858c84f99bdbcba445ea183277a618
SHA1 Checksum:	b3c4f5b49a163b83f7bcf30f4e253cc3ea5fdf01
SHA256 Checksum:	b89c4bebc190d827b6d6c5b80212e85e3fbdd04d44c718342c693613476d8c11
CRC32:
File Directory Location:	C:\Windows\System32\

File Version, System, and Machine Information
File Type:	Win32 DLL
Image Version:	6.3
Initialized Data Size:	4096
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

psapi.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:	7168
File Date:	07/26/2012
MD5 Checksum:	3588d5d12ff7bfebf2a4955c36b38eb0
SHA1 Checksum:	689f950a9660257a85505fa344e5c14247e0312d
SHA256 Checksum:	a5b4531ef91f32a02ca13aa0abd0a32dadb2b979876f2e2b2e7fcb116abdf3c6
CRC32:
File Directory Location:	C:\Windows\System32\

File Version, System, and Machine Information
File Type:	Win32 DLL
Image Version:	6.2
Initialized Data Size:	4096
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

psapi.dll

6.1.7600.16385

6.1.7600.16385 (win7_rtm.090713-1255)

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 7
Software:	Microsoft® Windows® Operating System
Software Version:	6.1.7600.16385
File Version:	6.1.7600.16385 (win7_rtm.090713-1255)
File Size:	9216
File Date:	07/14/2009
MD5 Checksum:	d87e1e59c73c1f98d5ded5b3850c40f5
SHA1 Checksum:	141c0ebecdd2733b90431f18b188ee0b64456268
SHA256 Checksum:	536419bff9f877d4314b5d0c045d9a6e729489c389863fadf07e382050bc84fd
CRC32:
File Directory Location:	C:\Windows\System32\

File Version, System, and Machine Information
File Type:	Win64 DLL
Image Version:	6.1
Initialized Data Size:	7168
Linker Version:	9.0
Machine Type:	AMD AMD64
PE Type:	PE32+
Subsystem:	Windows command line
Subsystem Version:	6.1
File Modification Date/Time:	07/14/2009

psapi.dll

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 7
File Size:	6144
MD5 Checksum:	a543ac1f7138376d778d630a35fcbc4c
SHA1 Checksum:	46f1ca56d7a58503185d45e8cc7e6161f5e6b52f
SHA256 Checksum:	2d824c66a97fc8c39dafa397cc47495b712d175eef393486946da8936bdd466a
CRC32:
File Directory Location:	C:\Windows\SysWOW64\

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

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Files Related to psapi.dll

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WnsClientApi.dll	OneDrive WNS Client Library	Microsoft OneDrive (19.222.1110.0006)	467816	C:\Users\Tester\AppData\Local\

Other Files Related to psapi.dll

File Name	Description	Software Program (Version)	File Size (bytes)	File Location
CBS.log	Log	Tiff Viewer 1	1181016	C:\Windows\Logs\CBS\
setupapi.dev.log	Log	Tiff Viewer 1	684126	C:\Windows\inf\
_NetworkingPerfCounters.h	C/C++/Objective-C Header	Tiff Viewer 1	811	C:\Windows\Microsoft.NET\Framework\v1.1.4322\
_Networkingperfcounter...	Windows Initialization	Tiff Viewer 1	56596	C:\Windows\Microsoft.NET\Framework\v1.1.4322\
api-ms-win-core-sysinf...	ApiSet Stub DLL	Microsoft® Windows® Operating System (10.0.17134.12)	12136	C:\Users\Tester\AppData\Local\Microsoft\OneDriv...

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