How to remove the curslib virus

Most antivirus programs identify curslib.dll as malware—e.g. Symantec identifies it as Hacktool.Rootkit, and Sophos identifies it as Mal/Generic-A.

The free file information forum can help you find out how to remove it. If you have additional information about this file, please leave a comment or a suggestion for other users.

Click to Run a Free Virus Scan for the curslib.dll malware

Curslib.dll file information

The process known as Microsoft RDO Library or Windows Socket Layer appears to belong to software Microsoft RDO Library or Microsoft Windows Operating System by Microsoft (

Description: Curslib.dll is not essential for Windows and will often cause problems. Curslib.dll is located in the C:\Windows\System32 folder. Known file sizes on Windows 10/8/7/XP are 32,256 bytes (38% of all occurrences), 32,768 bytes, 31,744 bytes or 33,280 bytes. 
A .dll file (Dynamic Link Library) is a special type of Windows program containing functions that other programs can call. This .dll file can be injected to all running processes and can change or manipulate their behavior. The program is not visible. The service has no detailed description. It can change the behavior of other programs or manipulate other programs. File is hidden. The file is not a Windows system file. Therefore the technical security rating is 100% dangerous; however you should also read the user reviews.

Recommended: Identify curslib.dll related errors

Important: You should check the curslib.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.


User Comments

Can be a malware - Win32/Bamital.B [eset] that redirects results of online search engines to web sites that contain adware.
  Robert   (further information)

Summary: Average user rating of curslib.dll: based on 1 vote with 1 user comment. One user thinks curslib.dll is dangerous and recommends removing it.

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Best practices for resolving curslib issues

The following programs have also been shown useful for a deeper analysis: Security Task Manager examines the active curslib process on your computer and clearly tells you what it is doing. Malwarebytes' well-known anti-malware tool tells you if the curslib.dll on your computer displays annoying ads, slowing it down. This type of unwanted adware program is not considered by some antivirus software to be a virus and is therefore not marked for cleanup.

A clean and tidy computer is the key requirement for avoiding PC trouble. This means running a scan for malware, cleaning your hard drive using cleanmgr and sfc /scannow, uninstalling programs that you no longer need, checking for Autostart programs (using msconfig) and enabling Windows' Automatic 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 resmon 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, for Windows 8 and later versions, executing the DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

Other processes

curslib.dll [all]