Microsoft Windows DLL profapi.dll

How to Download Profapi.dll and Fix DLL Error Messages

Last Updated: 11/27/2024
[Reading Time Required: 3.5 minutes]

User Profile Basic API files such as profapi.dll utilize the DLL file extension. This file is considered a Win32 DLL (Dynamic link library) file, and was first created by Microsoft for the Microsoft® Windows® Operating System software package.

profapi.dll was initially released with Windows 7 on 07/22/2009 for the Windows 7 Operating System. On 07/29/2015, version 10.0.15063.0 (WinBuild.160101.0800) was released for Windows 10. profapi.dll is included in Windows 10, Windows 8.1, and Windows 8.

In this short article, you will discover detailed file information, steps for troubleshooting DLL file problems with profapi.dll, and list of free downloads for every version that exists in our comprehensive file directory.

File Analysis Provided by Jason Geater (Author)

File Overview

General Information ^✻
File Name:	profapi.dll
File Extension:	DLL file extension
Description:	User Profile Basic API
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® 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:	0x3940
Code Size:	40960

View Other profapi.dll Information

File Info	Description
File Size:	58 kB
File Modification Date/Time:	2017:03:18 18:18:56+00:00
File Inode Change Date/Time:	2017:11:05 07:07:54+00:00
File Type:	Win32 DLL
MIME Type:	application/octet-stream
Warning:	Possibly corrupt Version resource
Machine Type:	Intel 386 or later, and compatibles
Time Stamp:	2047:11:18 12:27:59+00:00
PE Type:	PE32
Linker Version:	14.10
Code Size:	40960
Initialized Data Size:	8704
Uninitialized Data Size:	0
Entry Point:	0x3940
OS Version:	10.0
Image Version:	10.0
Subsystem Version:	10.0
Subsystem:	Windows GUI
File Version Number:	10.0.15063.0
Product Version Number:	10.0.15063.0
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:	Unicode
Company Name:	Microsoft Corporation
File Description:	User Profile Basic API
File Version:	10.0.15063.0 (WinBuild.160101.0800)
Internal Name:	PROFAPI.DLL
Legal Copyright:	© Microsoft Corporation. All rights reserved.
Original Filename:	PROFAPI.DLL
Product Name:	Microsoft® Windows® Operating System
Product Version:	10.0.15063.0

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

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What are profapi.dll Error Messages?

Dynamic Link Library profapi.dll Errors

profapi.dll is considered a type of Dynamic Link Library (DLL) file. Dynamic Link Library files, like profapi.dll, are essentially a "guide book" that stores information and instructions for executable (EXE) files - like 3DViewer.ResourceResolver.exe - to follow. These files were created so that multiple programs (eg. Windows) could share the same profapi.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 profapi.dll is attempted to be loaded either when Windows is starting up, or in some cases already running. Some of the most common profapi.dll errors include:

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

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

Step 2: Run SFC (System File Checker) to restore the corrupt or missing profapi.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 profapi.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 profapi.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 profapi.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 profapi.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 profapi.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 profapi.dll file version. We maintain a comprehensive database of 100% malware-free profapi.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 profapi.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 7: C:\Windows\SysWOW64\
Windows 7: C:\Windows\System32\
Windows 8: C:\Windows\System32\
Windows 8.1: C:\Windows\System32\
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 profapi.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 profapi.dll Files (Malware-Tested 100% Clean)

CAUTION : We strongly advise against downloading and copying profapi.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 profapi.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 10

File Name

Software Version

File Version

Architecture

profapi.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:	59456
File Date:	03/18/2017
MD5 Checksum:	512c954cae6e12dee03307a20df10f5e
SHA1 Checksum:	42311405f7be41c981cf5ddb9fc49d0af1e27c47
SHA256 Checksum:	30040d2049e9c29754323640ec513f137ae2c12b0892f9ec66c57fb600a3838c
CRC32:
File Directory Location:	C:\Windows\System32\

File Version, System, and Machine Information
File Type:	Win32 DLL
Image Version:	10.0
Initialized Data Size:	8704
Linker Version:	14.10
Machine Type:	Intel 386 or later, and compatibles
PE Type:	PE32
Subsystem:	Windows GUI
Subsystem Version:	10.0
File Modification Date/Time:	03/18/2017

Windows 8.1

File Name

Software Version

File Version

Architecture

profapi.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:	52152
File Date:	11/21/2014
MD5 Checksum:	937c157ee46e0510c9796416df312ceb
SHA1 Checksum:	5b7f3ba3d78f229d53e6f6c0f6534912197bd557
SHA256 Checksum:	8de40aca2224059df6b12c78075712fa30c3c0f6aa52f42f65ce07ba48df3540
CRC32:
File Directory Location:	C:\Windows\System32\

File Version, System, and Machine Information
File Type:	Win32 DLL
Image Version:	6.3
Initialized Data Size:	8192
Linker Version:	11.0
Machine Type:	Intel 386 or later, and compatibles
PE Type:	PE32
Subsystem:	Windows GUI
Subsystem Version:	6.3
File Modification Date/Time:	11/21/2014

Windows 8

File Name

Software Version

File Version

Architecture

profapi.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:	57344
File Date:	07/26/2012
MD5 Checksum:	7d2306701584ae7b77b8622314b55f78
SHA1 Checksum:	6ef68c5c2d0ae1898b519bec8ee856b8a2a299db
SHA256 Checksum:	89e250231402d7c3685e3a120bae1f2d4280ce44f2760f8658144addb7d86882
CRC32:
File Directory Location:	C:\Windows\System32\

File Version, System, and Machine Information
File Type:	Win32 DLL
Image Version:	6.2
Initialized Data Size:	8192
Linker Version:	10.10
Machine Type:	Intel 386 or later, and compatibles
PE Type:	PE32
Subsystem:	Windows GUI
Subsystem Version:	6.2
File Modification Date/Time:	07/26/2012

Windows 7

File Name

Software Version

File Version

Architecture

profapi.dll

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 7
File Size:	31744
MD5 Checksum:	c733d233b623b7ffce5031e4b756ee26
SHA1 Checksum:	12b2cbab8dd8b7531df89b03d2a9a7a4ea9f7c2b
SHA256 Checksum:	33cc8b140b0e4a9b702e3468be2646aee4273f20c6ea5bac6c3d8fc8edef0881
CRC32:
File Directory Location:	C:\Windows\SysWOW64\

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

profapi.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:	44032
File Date:	07/14/2009
MD5 Checksum:	2c942733a5983dd4502219ff37c7ebc7
SHA1 Checksum:	263e8fbf77c0ceead0c9bca56394bffa4a664361
SHA256 Checksum:	34b20b6b0d7274e4b5b783f1d2345bc3dd9888964d5c2c65712f041a00cf5b45
CRC32:
File Directory Location:	C:\Windows\System32\

File Version, System, and Machine Information
File Type:	Win64 DLL
Image Version:	6.1
Initialized Data Size:	15872
Linker Version:	9.0
Machine Type:	AMD AMD64
PE Type:	PE32+
Subsystem:	Windows GUI
Subsystem Version:	6.1
File Modification Date/Time:	07/14/2009

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Files Related to profapi.dll

DLL Files Related to profapi.dll

File Name	Description	Software Program (Version)	File Size (bytes)	File Location
api-ms-win-core-regist...	ApiSet Stub DLL	Microsoft® Windows® Operating System (6.2.9200.16384)	3584	C:\Windows\System32\LogFiles\WMI\RtBackup\
BthTelemetry.dll	Bluetooth Telemetry Agent	Microsoft® Windows® Operating System (10.0.15063.0)	27136	C:\Windows\diagnostics\system\Device\
unbcl.dll	Dynamic Link Library	Windows 10	833952	C:\WINDOWS\Tasks\
SrpUxSnapIn.dll	Dynamic Link Library	Windows 7	1530368	C:\Windows\inf\WmiApRpl\0009\
FXSAPI.DLL	Microsoft Fax API Support DLL	Microsoft® Windows® Operating System (10.0.15063.0)	229888	C:\Windows\Fonts\

Other Files Related to profapi.dll

File Name	Description	Software Program (Version)	File Size (bytes)	File Location
WLAN_profile_v1.xsd	XML Schema Definition	Windows Vista	15591	C:\Windows\L2Schemas\
WLAN_profile_v1.xsd	XML Schema Definition	Windows XP	15263	C:\Windows\L2Schemas\
LAN_profile_v1.xsd	XML Schema Definition	Windows 7	2241	C:\Windows\L2Schemas\
LAN_policy_v1.xsd	XML Schema Definition	Windows 8.1	3472	C:\Windows\L2Schemas\
LAN_policy_v1.xsd	XML Schema Definition	Windows Vista	2687	C:\Windows\L2Schemas\

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