Most antivirus programs identify cls-lolz_x64.exe as malware.
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The cls-lolz_x64.exe process does not contain any indication of the producer (the software author) or the software with which it is associated.
Description: Cls-lolz_x64.exe is not essential for Windows and will often cause problems. Cls-lolz_x64.exe is located in a subfolder of Windows folder for temporary files or sometimes in a subfolder of the user's profile folder—mainly C:\Users\USERNAME\AppData\Local\Temp\is-LNGSQ.tmp\.
The file size on Windows 10/8/7/XP is 205,824 bytes.
The process has no file description. The program has no visible window. The file is not a Windows system file. Therefore the technical security rating is 79% dangerous.
Recommended: Identify cls-lolz_x64.exe related errors
Important: You should check the cls-lolz_x64.exe 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.
The following programs have also been shown useful for a deeper analysis: ASecurity Task Manager examines the active cls-lolz_x64 process on your computer and clearly tells you what it is doing. Malwarebytes' well-known Banti-malware tool tells you if the cls-lolz_x64.exe 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 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, for Windows 8 and later versions, executing the 7DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.