wuapi.dll - How to Fix? Download Now

Sometimes Windows system displays error messages regarding corrupted or missing wuapi.dll files. Situations like that can occur, for example, during a software installation process. Each software program requires certain resources, libraries, and source data to work properly. Corrupted or nonexistent wuapi.dll file can therefore effect in failed execution of the started process.

wuapi.dll file Windows Update Client API. The file was developed by for use with software. Here you will find detailed information about the file and instructions how to proceed in the event of wuapi.dll related errors on your device. You can also download wuapi.dll file compatible with Windows 10, Windows 8.1, Windows 8, Windows 7, Windows 7, Windows Vista, Windows Vista, Windows XP devices which will (most probably) allow you to solve the problem.

Compatible with: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows 7, Windows Vista, Windows Vista, Windows XP

User popularity

3.1 Scanning for malicious software
3.2 System and driver update
3.3 System File Checker tool
3.4 System recovery

4 Download wuapi.dll

4.1 List of wuapi.dll file versions

File info

General information
Filename	wuapi.dll
File extension	DLL
Description	Windows Update Client API

Software
Program	Microsoft® Windows® Operating System
Author	Microsoft Corporation

Details
MIME type	application/octet-stream
File type	Dynamic link library
System	Windows NT 32-bit
Copyrights	© Microsoft Corporation. All rights reserved.
Character set	Unicode
Language cod	English (U.S.)

Most common wuapi.dll file related problems

There are various types of errors related to wuapi.dll file. wuapi.dll file may be located in wrong file directory on your device, may not be present in the system, or may be infected with malicious software and therefore not work correctly. Below is a list of most common error messages related to wuapi.dll file. If you encounter one listed below (or similar), please consider the following suggestions.

wuapi.dll is corrupted
wuapi.dll cannot be located
Runtime Error - wuapi.dll
wuapi.dll file error
wuapi.dll file cannot be loaded. Module was not found
cannot register wuapi.dll file:
wuapi.dll file could not be loaded
wuapi.dll file doesn't exist

wuapi.dll

Application could not be started because wuapi.dll file is missing. Reinstall the application to solve the problem.

Problems related to wuapi.dll can be addressed in various ways. Some methods are meant only for advanced users. If you don't have confidence in your skills, we suggest consulting a specialist. Fixing wuapi.dll file errors should be approached with utmost caution for any mistakes can result in unstable or unproperly working system. If you have the necassary skills, please proceed.

How to fix wuapi.dll errors in just few steps?

Remember, before taking any action related to system files perform a backup copy of your data!

wuapi.dll file errors can be caused by various factors, so its is beneficial to try to fix them using various methods.

Step 1: Scan your computer for any malicious software

Windows files are commonly attacked by malicious software that prevents them from working properly. First step in addressing problems with wuapi.dll file or any other Windows system files should be scanning the system for malicious software using an antivirus tool.

If by any chance you don't have any antivirus software installed on your system yet, you should do it immediately. Unprotected system is not only a source of file errors, but, more importantly, makes your system vulnerable to many dangers. If you don't know which antivirus tool to choose, consult this Wikipedia article – comparison of antivirus software.

Step 2: Update your system and drivers.

Installing relevant Microsoft Windows patches and updates may solve your problems related to wuapi.dll file. Use dedicated Windows tool to perform the update.

Go to the Windows "Start" menu
Type "Windows Update" in the search field
Choose the appropriate software program (name may vary depending on your system version)
Check if your system is up to date. If any unapplied updates are listed, install them immediately.
After the update has been done,restart your computer in order to complete the process.

Beside updating the system, it is recommended that you install latest device drivers, as drivers can influence proper working of wuapi.dll or other system files. In order to do so, go to your computer or device producer's website where you will find information regarding latest driver updates.

Step 3: Use System File Checker (SFC) tool

System File Checker is a Microsoft Windows tool. As the name suggests, the tool is used for identyfing and addressing system file related errors, including those related to wuapi.dll file. After an error related to%fileextension% file has been discovered, the program attempts to automatically replace the wuapi.dll file with properly working version. To use the tool:

Go to the Windows "Start" menu
Type "cmd" in the search field
Locate "Command Prompt" result – don't run it yet:
Click the right mouse button and select "Run as Administrator" option
Type "sfc /scannow" in console prompt to start the program and follow the instructions

Step 4: Restoring Windows system

Another approach is to restore system to previous state, before the wuapi.dll file error occured. In order to restore your system, follow the instructions below

Go to the Windows "Start" menu
Type "System Restore" in the search field
Start the system restore tool – it's name may differ depending on version of the system
The application will guide you through the process – read the messages carefully
After the process has finished, restart your computer.

If all the above-mentioned methods failed and the wuapi.dll file problem has not been resolved, proceed to the next step. Remember that the following steps are intended only for advanced users.

Download and replace wuapi.dll file

The last solution is to manually download and replace wuapi.dll file in appropriate folder on the disk. Select file version compatible with your operating system and click the "Download" button. Next, go to your web browser's "Downloaded" folder and copy the downloaded wuapi.dll file.

Go to the folder where the file should be located and paste the downloaded file. Below is the list of wuapi.dll file example directory paths.

Windows 10: C:\Windows\System32\
Windows 8.1: C:\Windows\System32\
Windows 8: 1: C:\Windows\System32\
Windows 7: C:\Windows\SysWOW64\
Windows 7: C:\Windows\SysWOW64\
Windows Vista: ---
Windows Vista: ---
Windows XP: ---

If the steps did not solve your wuapi.dll file problem, you should consult a professional. A probability exists that the error(s) might be device-related and therefore should be resolved at the hardware level. A fresh operating system installation might be necessary – a faulty system installation process can result in data loss.

File versions list

Filename wuapi.dll

System Windows 10

File size 787456 bytes

Date 2017-03-18

Download

File details
	MD5	539fcb6315c1ce18bf3c62e180226ba0
	SHA1	ea15aa2601c89c3e54e552e373ad85fc1ef854ae
	SHA256	87706bcda88da0b6ed385dcf4741592a7ac57fd7e5f24e83e824a1e96b3210bd
	CRC32	23d18594
	Example file location	C:\Windows\System32\

Filename wuapi.dll

System Windows 8.1

File size 723968 bytes

Date 2014-11-21

Download

File details
	MD5	d199bb67186a96dcdcf958f6c1a7ad89
	SHA1	9d7dfb863c9e30dbb080f9739b63e9f12a6d0cda
	SHA256	a3c7f4966e1d0fc841aae30b871dec0d96104c82db808b0b09ba90ef99710652
	CRC32	704aa7f2
	Example file location	C:\Windows\System32\

Filename wuapi.dll

System Windows 8

File size 620032 bytes

Date 2012-07-26

Download

File details
	MD5	2946fbd7c3979cc52ef02157b5aabe97
	SHA1	d1b10244ebfa368a72cd34d0f1d93154988ef74b
	SHA256	8be106713099748a0a5d5932d1a8f7d7f2828d55a6695444481ca012b5aa4d0e
	CRC32	0541fbd0
	Example file location	1: C:\Windows\System32\

Filename wuapi.dll

System Windows 7

File size 560128 bytes

Date -0001-11-30

Download

File details
	MD5	7d4dc95a1f5e0818e74a399960569ea1
	SHA1	c0fb2452b03285cc7e7d4c8cd73798bcb64af38f
	SHA256	c2c3b735d5fa128b192c97e237f39cf084f64a2f455e678028abca3e2a1e40f6
	CRC32	b12e4638
	Example file location	C:\Windows\SysWOW64\

Filename wuapi.dll

System Windows 7

File size 695808 bytes

Date -0001-11-30

Download

File details
	MD5	91b8c8f46e4ed4b4dfd5952533a692ef
	SHA1	ffecc28cfb2fbc0eb32e2539484df008a2acd57c
	SHA256	8b8fb0e60622c6ee8e15fd270e3d7ec0b176db5130678d6a31ce592bdc1562dc
	CRC32	99aed032
	Example file location	C:\Windows\SysWOW64\

Filename wuapi.dll

System Windows Vista

File size 655872 bytes

Date 2009-04-11

Download

File details
	MD5	349e18e3b5cd5332e440d187bd6ca5b0
	SHA1	8857ce9b896b7ea4c3d79140b8406beb466dded2
	SHA256	48f90891642c2dbfb0402a674df44c2fad7f32aecb99a1522d89b0c6b1816027
	CRC32	f9510039
	Example file location	---

Filename wuapi.dll

System Windows Vista

File size 532480 bytes

Date -0001-11-30

Download

File details
	MD5	505c5319786cff7a9d2cb7c8197b1f1d
	SHA1	147b821d3a0342be35d3d879adde50305873d14c
	SHA256	cdb07b351cad1b8acebd98de721fa4b517c267002bcdf59a5d48e98fb647a95f
	CRC32	d1158067
	Example file location	---

Filename wuapi.dll

System Windows XP

File size 430592 bytes

Date 2008-04-14

Download

File details
	MD5	8c54260d3263ed4e9bea132feb3bfcb1
	SHA1	eb457e171a07db923e794e3174c7cebd1e80037f
	SHA256	4a2139766ef9e69a75f61480b8e1852fb5567a134d2f12b5577c06d90169ae01
	CRC32	f45d3b47
	Example file location	---