Dll File Information
Filename: pcaui.dll
Version: 6.3.9600.16407 (winblue_gdr.130918-1706)
Filesize: 54KB
Description: Program Compatibility Assistant User Interface Module
Download pcaui.dll

Installation instructions

Here is complete guide of pcaui.dll installation. Read it below and you will know where to put pcaui.dll.

Step one. Unzip pcaui.dll wherever you want.

Step two. Place pcaui.dll in \Windows\System32 (usually located at disk C) if you’re running 32 bit Windows. If you’are running 64 bit Windows, additionally place file in \Windows\SysWOW64.

Look at the System Type and what is listed next.
  • If you running 32-bit Operating System of Windows 7/8/8.1 you have this:
windows-32-bit
  • If you running 64-bit Operating System of Windows 7/8/8.1 you have this:
windows-64-bit

Step three. Reboot your pc.

If after rebooting you still getting pcaui.dll error, do the following:

  1. Press ‘Start
  2. Type ‘cmd‘ in search and press Enter.
  3. Type regsvr32 pcaui.dll and press Enter

After doing this restart your PC again and you will be no longer receiving pcaui.dll errors.

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A bit more about pcaui.dll…

pcaui.dll it is dynamic link library that is a part of Microsoft Visual C++ component. It is used by many modern games and programs: pes 2016,Gta 5, far cry 4, Sims 4, Arma 3, Battlefield 4,Watch Dogs,Pes 2013 Dragon Age: Inquisition and many more.

Usually pcaui.dll located at Windows\System32 if you are running Windows 32 bit. If you are running Windows 64 bit (doesn’t matter which one – XP, Vista, Seven or 8) copy of this file also located at Windows\SysWOW64.

If pcaui.dll is missing in one or both directories, program or game that uses this file cannot find it and cannot receive required data, so you get error like that:

The program can’t start because pcaui.dll is missing from your computer. Try reinstalling the program to fix this problem.

Of course, you don’t need to reinstall game or program. You just need to download pcaui.dll and install it properly to fix this error.