PCAUI.DLL Download & Fix Errors | DLL Files

Windows System File: pcaui.dll Full Name and Purpose The file "pcaui.dll" stands for "Program Compatibility Assistant User Interface." Its primary purpose is to support the Program Compatibility Assistant in Windows, which helps users run older software versions on newer versions of the Windows operating system.

Available Versions of pcaui.dll

Version	File Size	Company	Architecture	Language	Download
6.3.9600.16407 (winblue_gdr.130918-1706)	46.5 KB	Microsoft Corporation	x86 (32-bit)	English (United States)	Download
6.2.9200.16384 (win8_rtm.120725-1247)	46.0 KB	Microsoft Corporation	x86 (32-bit)	English (United States)	Download
6.1.7600.16385 (win7_rtm.090713-1255)	85.0 KB	Microsoft Corporation	x86 (32-bit)	English (United States)	Download
6.0.6001.18000 (longhorn_rtm.080118-1840)	453.5 KB	Microsoft Corporation	x86 (32-bit)	English (United States)	Download
6.0.6001.18000 (longhorn_rtm.080118-1840)	603.5 KB	Microsoft Corporation	x64 (64-bit)	English (United States)	Download
10.0.14393.0 (rs1_release.160715-1616)	60.0 KB	Microsoft Corporation	x86 (32-bit)	English (United States)	Download
10.0.14393.0 (rs1_release.160715-1616)	70.0 KB	Microsoft Corporation	x64 (64-bit)	English (United States)	Download
10.0.10586.0 (th2_release.151029-1700)	69.5 KB	Microsoft Corporation	x64 (64-bit)	English (United States)	Download
10.0.10586.0 (th2_release.151029-1700)	60.0 KB	Microsoft Corporation	x86 (32-bit)	English (United States)	Download

Windows System File: pcaui.dll

Full Name and Purpose

The file "pcaui.dll" stands for "Program Compatibility Assistant User Interface." Its primary purpose is to support the Program Compatibility Assistant in Windows, which helps users run older software versions on newer versions of the Windows operating system. The DLL file contains the necessary code and resources to display the user interface elements of the Program Compatibility Assistant.

Location

The "pcaui.dll" file is usually located in the following directory:

C:\Windows\System32\

Publisher

The "pcaui.dll" file is published by Microsoft Corporation, as it is an integral part of the Windows operating system.

Importance and Deletion

The "pcaui.dll" file is important for the functioning of the Program Compatibility Assistant. Deleting this file could result in the loss of compatibility support features, making it difficult to run older programs on newer versions of Windows. It is not recommended to delete this file.

Common Issues or Security Concerns

Common issues related to "pcaui.dll" include:

The file being missing or corrupted, leading to errors when trying to run compatibility modes for older programs.
Potential for malware to disguise itself with a similar name, although this is rare.

Ensuring that your antivirus software is up-to-date can mitigate most security concerns associated with DLL files.

How to Fix 'pcaui.dll is Missing' Errors

Restart Your Computer: Sometimes, a simple restart can resolve temporary issues.
Run System File Checker:
- Open Command Prompt as an administrator.
- Type sfc /scannow and press Enter.
- Follow the on-screen instructions to repair corrupted system files.
Use System Restore:
- Open Control Panel and navigate to Recovery.
- Select "Open System Restore" and choose a restore point before the issue occurred.
Reinstall the Program: If the error occurs with a specific program, try reinstalling the program to replace any missing files.
Check for Windows Updates: Ensure your operating system is updated, as updates may include bug fixes and file replacements.