Microsoft Microsoft Office Basic 2007 DLL NPOFF12.DLL

Repair NPOFF12.DLL DLL Issues (How to Download and Fix)

Last Updated: 12/07/2024
[Time Required for Reading: 3.5 minutes]

NPOFF12.DLL, also known as a Office Plugin for Netscape Navigator file, was created by Microsoft for the development of 2007 Microsoft Office system. DLL files fall under under the Win32 DLL (Dynamic link library) file type category.

NPOFF12.DLL was initially released with Office 2007 on 01/30/2007 for the Windows Vista Operating System. The latest file version for Microsoft Office Basic 2007 11 is v12.0.4518.1014 released on 07/28/2009. NPOFF12.DLL is bundled with the software package in Windows 10, and Windows Vista.

Continue reading below to discover detailed file information, DLL file troubleshooting, and free downloads of several versions of NPOFF12.DLL.

File Analysis Provided by Jason Geater (Author)

File Overview

General Information ^✻
File Name:	NPOFF12.DLL
File Extension:	DLL file extension
Description:	Office Plugin for Netscape Navigator
Object File Type:	Dynamic link library
File Operating System:	Windows NT 32-bit
MIME Type:	application/x-msoffice12
User Popularity Rating:

Developer and Software Information
Software Developer:	Microsoft Corporation
Software Program:	2007 Microsoft Office system
Legal Copyright:	© 2006 Microsoft Corporation. All rights reserved.

File Details
Character Set:	Windows, Latin1
Language Code:	English (U.S.)
File Flags:	(none)
File Flags Mask:	0x003f
Entry Point:	0x19a6
Code Size:	5120

View Other NPOFF12.DLL Information

File Info	Description
File Size:	16 kB
File Modification Date/Time:	2020:03:02 07:12:27+00:00
File Inode Change Date/Time:	2018:05:23 20:22:02+00:00
File Type:	Win32 DLL
MIME Type:	application/x-msoffice12
Machine Type:	Intel 386 or later, and compatibles
Time Stamp:	2006:10:27 03:05:11+00:00
PE Type:	PE32
Linker Version:	8.0
Code Size:	5120
Initialized Data Size:	3584
Uninitialized Data Size:	0
Entry Point:	0x19a6
OS Version:	4.0
Image Version:	0.0
Subsystem Version:	5.1
Subsystem:	Windows command line
File Version Number:	12.0.4518.1014
Product Version Number:	12.0.4518.0
File Flags Mask:	0x003f
File Flags:	(none)
File OS:	Windows NT 32-bit
Object File Type:	Dynamic link library
File Subtype:	0
Language Code:	English (U.S.)
Character Set:	Windows, Latin1
Company Name:	Microsoft Corporation
File Description:	Office Plugin for Netscape Navigator
File Version:	12.0.4518.1014
Internal Name:	NpOff12
Legal Copyright:	© 2006 Microsoft Corporation. All rights reserved.
Original Filename:	NpOff12.dll
Product Name:	2007 Microsoft Office system
Product Version:	12.0.4518.1014
Legal Trademarks 1:	Microsoft® is a registered trademark of Microsoft Corporation.
Legal Trademarks 2:	Windows® 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 NPOFF12.DLL Error Messages?

Dynamic Link Library NPOFF12.DLL Errors

NPOFF12.DLL is considered a type of Dynamic Link Library (DLL) file. Dynamic Link Library files, like NPOFF12.DLL, are essentially a "guide book" that stores information and instructions for executable (EXE) files - like CNFNOT32.EXE - to follow. These files were created so that multiple programs (eg. Microsoft Office Basic 2007) could share the same NPOFF12.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 NPOFF12.DLL is attempted to be loaded either when Microsoft Office Basic 2007 is starting up, or in some cases already running. Some of the most common NPOFF12.DLL errors include:

Access Violation at address - NPOFF12.DLL.
NPOFF12.DLL could not be found.
Cannot find C:\Program Files (x86)\Microsoft Office\Office12\NPOFF12.DLL.
Cannot register NPOFF12.DLL.
Cannot start Microsoft Office Basic 2007. A required component is missing: NPOFF12.DLL. Please install Microsoft Office Basic 2007 again.
Failed to load NPOFF12.DLL.
The application has failed to start because NPOFF12.DLL was not found.
The file NPOFF12.DLL is missing or corrupt.
This application failed to start because NPOFF12.DLL was not found. Re-installing the application may fix this problem.

Your NPOFF12.DLL file could be missing due to accidental deletion, uninstalled as a shared file of another program (shared with Microsoft Office Basic 2007), or deleted by a malware infection. Furthermore, NPOFF12.DLL file corruption could be caused from a power outage when loading Microsoft Office Basic 2007, system crash while loading NPOFF12.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 NPOFF12.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 NPOFF12.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 NPOFF12.DLL error, please proceed to the Step 2 below.

Step 2: If recently installed Microsoft Office Basic 2007 (or related software), uninstall then try reinstalling Microsoft Office Basic 2007 software.

You can uninstall Microsoft Office Basic 2007 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 Microsoft Office Basic 2007 11 and click "Uninstall"
Follow the prompts for uninstallation.

After the software has been fully uninstalled, restart your PC and reinstall Microsoft Office Basic 2007 software.

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

Microsoft Office Basic 2007 11

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 NPOFF12.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 NPOFF12.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 NPOFF12.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 NPOFF12.DLL file version. We maintain a comprehensive database of 100% malware-free NPOFF12.DLL files for every applicable version of Microsoft Office Basic 2007. Please follow the steps below to download and properly replace you file:

Locate your Windows operating system version in the list of below "Download NPOFF12.DLL Files".
Click the appropriate "Download Now" button and download your Windows file version.
Copy this file to the appropriate Microsoft Office Basic 2007 folder location:

Windows Vista: C:\Program Files (x86)\Microsoft Office\Office12\
Windows 10: C:\Program Files (x86)\Microsoft Office\Office12\
Windows 10: C:\Program Files (x86)\Microsoft Office\Office12\
Windows 10: C:\Program Files (x86)\Microsoft Office\Office12\
Windows 10: C:\Program Files (x86)\Microsoft Office\Office12\
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 NPOFF12.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 NPOFF12.DLL Files (Malware-Tested 100% Clean)

CAUTION : We strongly advise against downloading and copying NPOFF12.DLL to your appropriate Windows system directory. Microsoft typically does not release Microsoft Office Basic 2007 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 NPOFF12.DLL and all other DLL files for Microsoft Office Basic 2007. An incorrectly installed DLL file may create system instability and could cause your program or operating system to stop functioning altogether. Proceed with caution.

Microsoft Office Basic 2007 11

File Name

Software Version

File Version

Architecture

NPOFF12.DLL

12.0.4518.0

12.0.4518.1014

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 10
Software:	2007 Microsoft Office system
Software Version:	12.0.4518.0
File Version:	12.0.4518.1014
File Size:	16192
File Date:	03/02/2020
MD5 Checksum:	9a6101f29e2e9d41b99cbcc8f106e8fe
SHA1 Checksum:	36f5049c6fc5c28c8b7ec9b586ee069bc8de7213
SHA256 Checksum:	8eed622539ca4e52486b4224e3d194b5a3bd4249252a714d78db5500722893aa
CRC32:
File Directory Location:	C:\Program Files (x86)\Microsoft Office\Office12\

File Version, System, and Machine Information
File Type:	Win32 DLL
Image Version:	0.0
Initialized Data Size:	3584
Linker Version:	8.0
Machine Type:	Intel 386 or later, and compatibles
PE Type:	PE32
Subsystem:	Windows command line
Subsystem Version:	5.1
File Modification Date/Time:	03/02/2020

Microsoft Office Home & Student 2007

File Name

Software Version

File Version

Architecture

NPOFF12.DLL

12.0.4518.0

12.0.4518.1014

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 10
Software:	2007 Microsoft Office system
Software Version:	12.0.4518.0
File Version:	12.0.4518.1014
File Size:	16192
File Date:	03/02/2020
MD5 Checksum:	9a6101f29e2e9d41b99cbcc8f106e8fe
SHA1 Checksum:	36f5049c6fc5c28c8b7ec9b586ee069bc8de7213
SHA256 Checksum:	8eed622539ca4e52486b4224e3d194b5a3bd4249252a714d78db5500722893aa
CRC32:
File Directory Location:	C:\Program Files (x86)\Microsoft Office\Office12\

File Version, System, and Machine Information
File Type:	Win32 DLL
Image Version:	0.0
Initialized Data Size:	3584
Linker Version:	8.0
Machine Type:	Intel 386 or later, and compatibles
PE Type:	PE32
Subsystem:	Windows command line
Subsystem Version:	5.1
File Modification Date/Time:	03/02/2020

Microsoft Office Project Standard 2007 12

File Name

Software Version

File Version

Architecture

NPOFF12.DLL

12.0.4518.0

12.0.4518.1014

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 10
Software:	2007 Microsoft Office system
Software Version:	12.0.4518.0
File Version:	12.0.4518.1014
File Size:	16192
File Date:	03/02/2020
MD5 Checksum:	9a6101f29e2e9d41b99cbcc8f106e8fe
SHA1 Checksum:	36f5049c6fc5c28c8b7ec9b586ee069bc8de7213
SHA256 Checksum:	8eed622539ca4e52486b4224e3d194b5a3bd4249252a714d78db5500722893aa
CRC32:
File Directory Location:	C:\Program Files (x86)\Microsoft Office\Office12\

File Version, System, and Machine Information
File Type:	Win32 DLL
Image Version:	0.0
Initialized Data Size:	3584
Linker Version:	8.0
Machine Type:	Intel 386 or later, and compatibles
PE Type:	PE32
Subsystem:	Windows command line
Subsystem Version:	5.1
File Modification Date/Time:	03/02/2020

Microsoft Office Outlook 2007 12

File Name

Software Version

File Version

Architecture

NPOFF12.DLL

12.0.4518.0

12.0.4518.1014

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 10
Software:	2007 Microsoft Office system
Software Version:	12.0.4518.0
File Version:	12.0.4518.1014
File Size:	16192
File Date:	03/02/2020
MD5 Checksum:	9a6101f29e2e9d41b99cbcc8f106e8fe
SHA1 Checksum:	36f5049c6fc5c28c8b7ec9b586ee069bc8de7213
SHA256 Checksum:	8eed622539ca4e52486b4224e3d194b5a3bd4249252a714d78db5500722893aa
CRC32:
File Directory Location:	C:\Program Files (x86)\Microsoft Office\Office12\

File Version, System, and Machine Information
File Type:	Win32 DLL
Image Version:	0.0
Initialized Data Size:	3584
Linker Version:	8.0
Machine Type:	Intel 386 or later, and compatibles
PE Type:	PE32
Subsystem:	Windows command line
Subsystem Version:	5.1
File Modification Date/Time:	03/02/2020

Office 2007

File Name

Software Version

File Version

Architecture

NPOFF12.DLL

12.0.4518.0

12.0.4518.1014

32-bit (x32)

Expand for Detailed File Information +

OS Version:	Windows Vista
Software:	2007 Microsoft Office system
Software Version:	12.0.4518.0
File Version:	12.0.4518.1014
File Size:	16192
File Date:	03/02/2020
MD5 Checksum:	9a6101f29e2e9d41b99cbcc8f106e8fe
SHA1 Checksum:	36f5049c6fc5c28c8b7ec9b586ee069bc8de7213
SHA256 Checksum:	8eed622539ca4e52486b4224e3d194b5a3bd4249252a714d78db5500722893aa
CRC32:
File Directory Location:	C:\Program Files (x86)\Microsoft Office\Office12\

File Version, System, and Machine Information
File Type:	Win32 DLL
Image Version:	0.0
Initialized Data Size:	3584
Linker Version:	8.0
Machine Type:	Intel 386 or later, and compatibles
PE Type:	PE32
Subsystem:	Windows command line
Subsystem Version:	5.1
File Modification Date/Time:	03/02/2020

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Files Related to NPOFF12.DLL

DLL Files Related to NPOFF12.DLL

File Name	Description	Software Program (Version)	File Size (bytes)	File Location
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\
MSO.DLL	2007 Microsoft Office component	2007 Microsoft Office system (12.0.4518.1014)	16870712	C:\Windows\Temp\527D94AF-D053-4381-B105-0D815D5...
ETWlog.dll	ETW Session Library	Microsoft OneDrive (19.222.1110.0006)	24424	C:\Users\Tester\AppData\Local\Microsoft\Windows\
qtquickextrasplugin.dll	C++ Application Development Framework	Qt5 (5.11.1.0)	68160	C:\Users\Tester\AppData\Local\
qquicklayoutsplugin.dll	C++ Application Development Framework	Qt5 (5.11.1.0)	80744	C:\Users\Tester\AppData\Local\

Other Files Related to NPOFF12.DLL

File Name	Description	Software Program (Version)	File Size (bytes)	File Location
OneX_v1.xsd	XML Schema Definition	Windows 8	5957	C:\Windows\L2Schemas\
WWAN_profile_v1.xsd	XML Schema Definition	Windows 8	6201	C:\Windows\L2Schemas\
WWAN_profile_v1.xsd	XML Schema Definition	Microsoft Office Access 2010 14	6201	C:\Windows\Temp\527D94AF-D053-4381-B105-0D815D5...
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\

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