PC Pitstop is the undisputed leader in PC diagnostics. Our running process library is culled from our database of over 100 million PC diagnostics and scans.

Tip from the PitCrew

Every process running on your computer takes up CPU cycles and valuable memory. For optimal PC performance and resource utilization, you should be aware of every process on your computer. PC Pitstop designed this process library to help you know which processes are worthwhile and others that slow system performance.

Furthermore, perhaps the quickest and most straight forward method to detect malware is through a running process analysis.

logonui.exe (Microsoft Logon User Interface)

Percentage of recently scanned PC's with this process running: 0.06%
Average CPU use for this program: 0%
Average RAM for this program: 2 MB

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PC Pitstop Analysis

logonui.exe is the Microsoft Windows XP user switching screen executable.

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Recommendation

logonui.exe is an essential part of Windows and required for Windows to work properly. It should never be disabled.

PC Pitstop recommends WinPatrol Plus for monitoring all of the background activity on your PC. WinPatrol Plus provides a easy to understand descriptions of over 15,000 processes and programs.

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Identification

In addition to the file name, logonui.exe, the following version information is used to identify the file. If the file does not match this information, it may be a different file. To ensure the file is absolutely correct, run a free and comprehensive scan.

Vendor contains:	Microsoft
Product contains:	Microsoft

To view version information with Windows Explorer, right-click the file and click Properties, Version.

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MD5 Hashes

MD5 hashes is the way that computers can define the uniqueness of a file. Anti malware vendors frequently use this technique to detect and clean malware. It is common for a program to have multiple MD5 hashes as the developers create newer versions of the program. For the program called logonui.exe, we have detected more than 20 different MD5 hashes. Click on a hash to research the hash in Google.

MD5 Report Summary
Program Name	MD5 Count
logonui.exe	> 20

#	MD5	Size
1	0xae267535b3ae6d553ce048ddd0e0320d	505344 bytes
2	0x7db59fff2af32c27eb2276424fa5eddb	514560 bytes
3	0x064fdfd20a1df642d36cde1393d44651	515584 bytes
4	0x6df6682b31a16af46b3f38f7c48c45ae	580096 bytes
5	0x3588c1e1a3b5cd7fa08d98793194a3f0	504320 bytes
6	0x5631e0fa14bd75b8a6c50615d2495244	69001 bytes
7	0xbd79c699035e67815bf268fd23e705c0	514560 bytes
8	0xc24249d9f86873411b8641703776454e	514560 bytes
9	0xb705dac36d5f8ee33f41959c27865379	504832 bytes
10	0xf5baa26583d3f7afeeafd8c834669d56	505344 bytes
11	0x827bbe9c543bcf541251906542938d78	515072 bytes
12	0x43bdf167ce792a5639d99ad7f1eabc1c	515584 bytes
13	0x617c1f9f941679fa8f308ef6b157c33e	515072 bytes
14	0x344a13f58574ac9b1fbde46de35852de	504320 bytes
15	0xeab1144395aacb4cbb85ae5f6334cb3f	9216 bytes
16	0xc2e2f7c883f4ee7e5ea1001c9ab5dfaa	3309056 bytes
17	0x3f5c8f98137df0da204597742f466c4e	515584 bytes
18	0x7367eec5feb4530ec23dfdcfe19bd8c6	70144 bytes
19	0xdbbca7bfb974bf56825b29720d9cb51b	514560 bytes
20	0xf047f492e2bce9a44681c7d2f1c4c1e7	72704 bytes

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PC Pitstop Database Comparisons

Every week, we update our information about the running programs identified during the previous week's testing. logonui.exe (Microsoft Logon User Interface) has been seen on 0.06% of systems tested at PC Pitstop. As a point of comparison, it is rare for a particular malicious program (virus or spyware) to be seen on more than one or two percent of all systems tested. The average RAM memory usage for this process was 2 MB. The average CPU load for this program was 0%.

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Vendor or Distributor's Web Site

http://www.microsoft.com/

Detailed Description and/or Removal Instructions

http://www.liutilities.com/products/wintaskspro/processlibrary/logonui/