Download and install DPUserAuth.dll to fix missing or corrupted dll errors.
About DPUserAuth.dll
DPUserAuth.dll is a Dynamic Link Library (DLL), designed to share functions and resources among various programs. Instead of every application having its own set of functions, common functions are kept in .DLL files so they can be shared among many applications.
When an application requires DPUserAuth.dll, Windows will check the application and system folders for this .dll file. If the file is missing you may receive an error and the application may not function properly.
Windows .DLL Error Examples
This application has failed to start because DPUserAuth.dll was not found. Re-installing the application may fix this problem.
DPUserAuth.dll Not Found.
Possible fixes for DPUserAuth.dll errors
To fix .dll errors, you can try a few basic steps. While some errors might need more detailed fixes, these initial steps often solve common problems.
Re-Install the application that requires DPUserAuth.dll.
Update the application to the latest version.
Install all Windows updates and any available driver updates.
Manually download and install DPUserAuth.dll.
You may already have this .dll file even though you are getting .dll errors. That's because the .dll file may have been moved or renamed by another application. Check to see if you already have DPUserAuth.dll on your computer. For more information see how to search your PC for .dll files.
How to register DPUserAuth.dll
In some cases, you may need to register the .dll file. To register the .dll file, open Command Prompt as an administrator, enter the installation folder, and run the "regsvr32" command. You'll receive a confirmation if the .dll file is successfully registered.
C:\User\Username>cd c:\windows\system32
C:\Windows\System32>regsvr32 DPUserAuth.dll
Download DPUserAuth.dll
Select the .dll version to download. In most cases, this would be the latest version (32/64-bit) from the appropriate company.