What is seclogon.dll?
The genuine seclogon.dll file is a software component of Microsoft Windows Operating System by Microsoft Corporation.
"Seclogon.dll" is the Secondary Logon Service of the Microsoft Windows operating system. Its startup setting is "manual": it runs only when the user or another program starts it. It resides in "C:\Windows\System32" and is hosted by the "svchost.exe" instance responsible for the "netsvcs" group. It allows a user to start a command or application with a different account's credentials, such as an administrator working on another user's computer, only using their administrative account to run certain commands or applications. If this service is stopped or disabled then that ability is not present. If the "Shift" key is held down when right-clicking on an application in the "Programs" list, the context menu includes "Run as different user," which opens a dialog requesting credentials. If the "RunAs" command is used to start an application then "seclogon.dll" will be involved. On US Defense Department compliant Windows 10 systems, "seclogon.dll" must be disabled.
SecLogon stands for Secondary Logon Service DLL
Seclogon.dll is a Windows DLL file. DLL is the abbreviation for Dynamic Link Library. DLL files are needed by programs or web browser extensions, because they contain program code, data, and resources.
The following information can help you determine if seclogon.dll is a Windows system file or if it belongs to an application that you can trust.
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Seclogon.dll file information
The process known as Secondary Logon Service DLL or Ýkincil Oturum Açma Hizmeti DLL'si belongs to software Microsoft Windows Operating System or Microsoft Windows Ýþletim Sistemi by Microsoft (www.microsoft.com).
Description: Seclogon.dll is not essential for the Windows OS and causes relatively few problems. The seclogon.dll file is located in the C:\Windows\System32 folder.
Known file sizes on Windows 10/11/7 are 18,944 bytes (85% of all occurrences) or 19,968 bytes. 
The service can be started or stopped from Services in the Control Panel or by other programs.
The program has no visible window. Seclogon.dll is a trustworthy file from Microsoft. The seclogon.dll file is not a Windows system file.
Seclogon.dll is able to manipulate other programs.
Therefore the technical security rating is 1% dangerous; however you should also read the user reviews.
Recommended: Identify seclogon.dll related errors
Important: Some malware disguises itself as seclogon.dll, particularly when not located in the C:\Windows\System32 folder. Therefore, you should check the seclogon.dll process on your PC to see if it is a threat. We recommend Security Task Manager for verifying your computer's security. This was one of the Top Download Picks of The Washington Post and PC World.
Best practices for resolving seclogon issues
A clean and tidy computer is the key requirement for avoiding problems with seclogon. This means running a scan for malware, cleaning your hard drive using 1cleanmgr and 2sfc /scannow, 3uninstalling programs that you no longer need, checking for Autostart programs (using 4msconfig) and enabling Windows' 5Automatic Update. Always remember to perform periodic backups, or at least to set restore points.
Should you experience an actual problem, try to recall the last thing you did, or the last thing you installed before the problem appeared for the first time. Use the 6resmon command to identify the processes that are causing your problem. Even for serious problems, rather than reinstalling Windows, you are better off repairing of your installation or executing the 7DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.
To get your computer running as fast as it did on day one, you can 8reset your PC. Your personal files will remain intact, but any programs you installed will need to be reinstalled.
To help you analyze the seclogon.dll process on your computer, the following programs have proven to be helpful: ASecurity Task Manager displays all running Windows tasks, including embedded hidden processes, such as keyboard and browser monitoring or Autostart entries. A unique security risk rating indicates the likelihood of the process being potential spyware, malware or a Trojan. A good Bantivirus software detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.
Other processes
spotfluxupdateservice.exe sdmtray.exe sky go.exe seclogon.dll repocket.exe stdsb.exe windrvr6.sys ipscan.exe ccsdkupdateagent.exe 4zhkstub.dll updatewhilokii.exe [all]
Score
User Comments
John Vincent
Sharon
Summary: Average user rating of seclogon.dll: based on 1 vote with 2 user comments. One user thinks seclogon.dll is essential for Windows or an installed application. One user is not sure about it.