Microsoft Office DLL CSAPI3T1.DLL

3 Steps to Download and Fix CSAPI3T1.DLL DLL Errors

Last Updated: 11/25/2023
[Time Required for Reading: 3.5 minutes]

CSAPI3T1.DLL, also known as a Microsoft CSAPI Converter (v3 to v1) file, was created by Microsoft for the development of Microsoft® CSAPI v3 to 1 converter. DLL files fall under under the Win32 DLL (Dynamic link library) file type category.

CSAPI3T1.DLL was initially released with Office XP on 05/31/2001 for the Windows XP Operating System. On 08/19/2003, version 1.0.2415 was released for Office 2003.

Please see below for more detailed information, DLL file troubleshooting instructions, and free downloads of different versions of CSAPI3T1.DLL.

File Analysis Provided by Jason Geater (Author)

File Overview

General Information ^✻
File Name:	CSAPI3T1.DLL
File Extension:	DLL file extension
Description:	Microsoft CSAPI Converter (v3 to v1)
Object File Type:	Dynamic link library
File Operating System:	Win32
MIME Type:	application/octet-stream
User Popularity Rating:

Developer and Software Information
Software Developer:	Microsoft Corporation
Software Program:	Microsoft® CSAPI v3 to 1 converter
Legal Copyright:	Copyright © 1999 Microsoft Corporation. All rights reserved.

File Details
Character Set:	Unicode
Language Code:	English (U.S.)
File Flags:	(none)
File Flags Mask:	0x003f
Entry Point:	0x481c
Code Size:	32768

View Other CSAPI3T1.DLL Information

File Info	Description
File Size:	64 kB
File Modification Date/Time:	2017:05:10 20:58:04+00:00
File Inode Change Date/Time:	2017:11:05 07:01:42+00:00
File Type:	Win32 DLL
MIME Type:	application/octet-stream
Machine Type:	Intel 386 or later, and compatibles
Time Stamp:	1998:12:15 21:33:46+00:00
PE Type:	PE32
Linker Version:	6.0
Code Size:	32768
Initialized Data Size:	24576
Uninitialized Data Size:	0
Entry Point:	0x481c
OS Version:	4.0
Image Version:	0.0
Subsystem Version:	4.0
Subsystem:	Windows GUI
File Version Number:	1.0.0.2415
Product Version Number:	1.0.0.2415
File Flags Mask:	0x003f
File Flags:	(none)
File OS:	Win32
Object File Type:	Dynamic link library
File Subtype:	0
Language Code:	English (U.S.)
Character Set:	Unicode
Company Name:	Microsoft Corporation
File Description:	Microsoft CSAPI Converter (v3 to v1)
File Version:	1.0.2415
Internal Name:	CSAPI3to1
Legal Copyright:	Copyright © 1999 Microsoft Corporation. All rights reserved.
Original Filename:	CSAPI3to1
Product Name:	Microsoft® CSAPI v3 to 1 converter
Product Version:	1.0.2415
Legal Trademarks:	Microsoft® is a registered trademark of Microsoft Corporation.

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

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What are CSAPI3T1.DLL Error Messages?

Dynamic Link Library CSAPI3T1.DLL Errors

CSAPI3T1.DLL is considered a type of Dynamic Link Library (DLL) file. Dynamic Link Library files, like CSAPI3T1.DLL, are essentially a "guide book" that stores information and instructions for executable (EXE) files - like wisptis.exe - to follow. These files were created so that multiple programs (eg. Office) could share the same CSAPI3T1.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 CSAPI3T1.DLL is attempted to be loaded either when Office is starting up, or in some cases already running. Some of the most common CSAPI3T1.DLL errors include:

Access Violation at address - CSAPI3T1.DLL.
CSAPI3T1.DLL could not be found.
Cannot find C:\Program Files\Common Files\Microsoft Shared\PROOF\CSAPI3T1.DLL.
Cannot register CSAPI3T1.DLL.
Cannot start Office. A required component is missing: CSAPI3T1.DLL. Please install Office again.
Failed to load CSAPI3T1.DLL.
The application has failed to start because CSAPI3T1.DLL was not found.
The file CSAPI3T1.DLL is missing or corrupt.
This application failed to start because CSAPI3T1.DLL was not found. Re-installing the application may fix this problem.

Your CSAPI3T1.DLL file could be missing due to accidental deletion, uninstalled as a shared file of another program (shared with Office), or deleted by a malware infection. Furthermore, CSAPI3T1.DLL file corruption could be caused from a power outage when loading Office, system crash while loading CSAPI3T1.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 CSAPI3T1.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 CSAPI3T1.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 CSAPI3T1.DLL error, please proceed to the Step 2 below.

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

You can uninstall Office 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 Office 2003 and click "Uninstall"
Follow the prompts for uninstallation.

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

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

Office 2003

Microsoft Corporation

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 CSAPI3T1.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 CSAPI3T1.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 CSAPI3T1.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 CSAPI3T1.DLL file version. We maintain a comprehensive database of 100% malware-free CSAPI3T1.DLL files for every applicable version of Office. Please follow the steps below to download and properly replace you file:

Locate your Windows operating system version in the list of below "Download CSAPI3T1.DLL Files".
Click the appropriate "Download Now" button and download your Windows file version.
Copy this file to the appropriate Office folder location:

Windows XP: C:\Program Files\Common Files\Microsoft Shared\PROOF\
Windows XP: C:\Program Files\Common Files\Microsoft Shared\PROOF\
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 XP.

GEEK TIP : We must emphasize that reinstalling Windows will be a very time-consuming and advanced task to resolve CSAPI3T1.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 CSAPI3T1.DLL Files (Malware-Tested 100% Clean)

CAUTION : We strongly advise against downloading and copying CSAPI3T1.DLL to your appropriate Windows system directory. Microsoft typically does not release Office 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 CSAPI3T1.DLL and all other DLL files for Office. An incorrectly installed DLL file may create system instability and could cause your program or operating system to stop functioning altogether. Proceed with caution.

Office XP

File Name

Software Version

File Version

Architecture

CSAPI3T1.DLL

1.0.0.2415

1.0.2415

32-bit (x32)

Expand for Detailed File Information +

OS Version:	Windows XP
Software:	Microsoft® CSAPI v3 to 1 converter
Software Version:	1.0.0.2415
File Version:	1.0.2415
File Size:	65593
File Date:	05/10/2017
MD5 Checksum:	6014d7e900291d76bae5467285e0a585
SHA1 Checksum:	a21fd2ceb3c717fe16989df0a1101650c7251fff
SHA256 Checksum:	b401006994210e5b92c314e7af9767ae603b229105d1186eaa21edf1769ae78d
CRC32:
File Directory Location:	C:\Program Files\Common Files\Microsoft Shared ...

File Version, System, and Machine Information
File Type:	Win32 DLL
Image Version:	0.0
Initialized Data Size:	24576
Linker Version:	6.0
Machine Type:	Intel 386 or later, and compatibles
PE Type:	PE32
Subsystem:	Windows GUI
Subsystem Version:	4.0
File Modification Date/Time:	05/10/2017

Office 2003

File Name

Software Version

File Version

Architecture

CSAPI3T1.DLL

1.0.0.2415

1.0.2415

32-bit (x32)

Expand for Detailed File Information +

OS Version:	Windows XP
Software:	Microsoft® CSAPI v3 to 1 converter
Software Version:	1.0.0.2415
File Version:	1.0.2415
File Size:	65593
File Date:	05/10/2017
MD5 Checksum:	6014d7e900291d76bae5467285e0a585
SHA1 Checksum:	a21fd2ceb3c717fe16989df0a1101650c7251fff
SHA256 Checksum:	b401006994210e5b92c314e7af9767ae603b229105d1186eaa21edf1769ae78d
CRC32:
File Directory Location:	C:\Program Files\Common Files\Microsoft Shared ...

File Version, System, and Machine Information
File Type:	Win32 DLL
Image Version:	0.0
Initialized Data Size:	24576
Linker Version:	6.0
Machine Type:	Intel 386 or later, and compatibles
PE Type:	PE32
Subsystem:	Windows GUI
Subsystem Version:	4.0
File Modification Date/Time:	05/10/2017

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Files Related to CSAPI3T1.DLL

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Microsoft.ReportingSer...	Dynamic Link Library	Office 2013	97792	C:\Users\Tester\AppData\Local\Microsoft\Windows...
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FPLACE.DLL	Microsoft Office 2013 component	Microsoft Office 2013 (15.0.4545.1000)	133824	C:\Windows\System32\
twrece.dll	English Recognition for Asian OCR	Asian OCR for ScanSoft API (15.0.4454.1000)	56416	C:\Windows\System32\wbem\Performance\

Other Files Related to CSAPI3T1.DLL

File Name	Description	Software Program (Version)	File Size (bytes)	File Location
WLANAP_profile_v1.xsd	XML Schema Definition	Windows 7	7504	C:\Windows\L2Schemas\
WLANAP_profile_v1.xsd	XML Schema Definition	Windows 8	7504	C:\Windows\L2Schemas\
WLAN_profile_v1.xsd	XML Schema Definition	Windows 8	15591	C:\Windows\L2Schemas\
WLAN_policy_v1.xsd	XML Schema Definition	Windows 8.1	7627	C:\Windows\L2Schemas\
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