What is c1.exe file ?

Most antivirus programs identify c1.exe as malware—for instance Kaspersky identifies it as not-a-virus:RiskTool.Win32.BitCoinMiner.pts, and Microsoft identifies it as PUA:Win32/CoinMiner.

Follow steps bellow to try fix the problem with c1.exe

1. Use cleanmgr

To run the command cleanmgr :
Press Windows key + Q.
Enter cmd in search box , followed by the combination Ctrl + Shift + Enter to run it as Administrator.
Enter the command cleanmgr and press Enter.

2. Use sfc /scannow

To run the command sfc /scannow :
Press Windows key + Q.
Enter cmd in search box, followed by the combination Ctrl + Shift + Enter to run it as Administrator.
Enter the command sfc /scannow and press Enter.

3. uninstalling programs :

To uninstall unnecessary programs :
Open the Start menu (Press Windows key + X) .
Click the first menu item Programs and Features.
Search unnecessary programs in the list of installed programs, .
Click the software you want to uninstall.

4. using msconfig

To run the command msconfig :
Press Windows key + Q.
Enter cmd in search box, followed by the combination Ctrl + Shift + Enter to run it as Administrator.
Enter the command msconfig and press Enter.

5. Automatic Update

To run the command wuauclt /ShowWindowsUpdate:
Press Windows key + Q.
Enter cmd in search box, followed by the combination Ctrl + Shift + Enter to run it as Administrator.
Enter the command wuauclt /ShowWindowsUpdate and press Enter.

6. Use resmon command

To run the command resmon :
Press Windows key + Q.
Enter cmd in search box, followed by the combination Ctrl + Shift + Enter to run it as Administrator.
Enter the command resmon and press Enter.

7. use DISM.exe

To run the command DISM.exe /Online /Cleanup-image /Restorehealth :
Press Windows key + Q.
Enter cmd in search box, followed by the combination Ctrl + Shift + Enter to run it as Administrator.
Enter the command DISM.exe /Online /Cleanup-image /Restorehealth and press Enter.

c1.exe descriptions

C1.exe is not essential for Windows and will often cause problems. The c1.exe file is located in the Windows folder for temporary files.;The file size on Windows 10/8/7/XP is 473,600 bytes.;There is no description of the program. The program has no visible window. The program starts when Windows starts (see Registry key: win.ini).;C1.exe is not a Windows core file.;C1.exe is able to manipulate other programs.;Therefore the technical security rating is 98% dangerous.