|File Information:||Program Compatibility Assistant User Interface|
|Vendor Name:||Microsoft Corporation|
|Operating System:||Windows 7, Vista, XP, 2000, ME, 98, 95|
|File Type:||The filename pcaui.exe refers to many versions of an executable file.|
|Tips:||Scan Your System for Registry Errors|
As one of the system processes in Windows operating system, pcaui.exe plays an important role of computer performance. If pcaui.exe has been stopped or infected, computer system will run unstable and even crash. By working with other Microsoft system processes like tsscalling.exe, fepatch.exe, snmp(3).exe, DXSDK_Aug09.exe, WindowsServer2003-KB282010-x86-CHT.exe, ，pcaui.exe will always run in the system backstage in order to make sure the whole computer perform normally. You can open “Task Manager” to check the situation of this exe file.
Registry Key of pcaui.exe:
Location of pcaui.exe: C:\windows\system32
You might encounter pcaui.exe error or pcaui.exe using 100% CPU usage problems which you just can not fix on your PC. When the exe error occurs, you may see the following messages on your screen:
pcaui.exe - Application Error
To fix pcaui.exe error or resolve high CPU usage problems, you can try methods as following:
1. Remove computer threats.
Check whether the signature database of your antivirus program is the latest and then scan your system thoroughly. Make sure your computer is free of virus, so that the other tips can make sense. If the security program detects a virus, the pcaui.exe not found error may not be fixed immediately. Go to tips 3.
2. Download a new pcaui.exe file
You can find any file from the internet for free, but not all of them are secure and effective. First, you should find a reliable download website or you can get pcaui.exe file from other computer. Later, scan it with security program. Last, install it to the correct folder.
3. Repair windows registry
Vulnerable registry stores all the system settings and data, so any mistake here can generate many computer errors. If PC was once infected by virus, it is necessary to clean up registry. If you get pcaui.exe not found error, it is recommended to repair registry first before you make any change to your system.
Follow these three steps; you can fix exe errors very easily.