What does the spoolsv.exe file do?
The spoolsv.exe process is also known as Spooler SubSystem App or, as the case may be, mIRC and is a part of Microsoft Windows Operating System or, as the case may be, mIRC. This software is produced by Microsoft (www.microsoft.com) or, as the case may be, mIRC Co. (www.mirc.com). An obsolete or defective version of spoolsv.exe can cause problems for your computer that can range from slowness to error messages such as these:
- Spooler SubSystem App has stopped working. Windows is checking for a solution to the problem... (Windows 10, 8, 7)
- Spooler SubSystem App has stopped working. A problem caused the program to stop working correctly. Windows will close the program and notify you if a solution is available. (Windows 10, 8, 7)
- spoolsv.exe has encountered a problem and needs to close. (Windows XP)
- Access violation at address FFFFFFFF in module spoolsv.exe. Read of address 00000000.
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What you should know about spoolsv.exe Spooler SubSystem App
spoolsv.exe is a Windows system file. The file spoolsv.exe is found in the C:\Windows\System32 directory.
Frequently occurring are file sizes such as 57,856 bytes (73% of all these files), 58,880 bytes as well as 21 other variants.
This spoolsv program does not have a visible window, and does not appear on the taskbar. The original file by Microsoft is digitally signed. So please check the file on your computer. For this reason, 10% of all experts consider this file to be a possible threat. The probability that it can cause harm is high.
spoolsv.exe is a system file used by Microsoft Windows, and appears in Windows Task Manager as a process named "Spooler SubSystem App." However, some viruses or Trojans use the same file name in order to remain undetected (such as Trojan Horse or, as the case may be, WS.Reputation.1 (recognized by Symantec), as well as Mal/FakeAV-BX (recognized by Sophos)).
To be really safe, you should scan your computer with two different anti-virus engines. You can use a free Anti-Malware scanner for this purpose.
Objectionable files with the same file name have the following characteristics:
- A spoolsv.exe file has a 70% certainty of being dangerous if it is found in a subdirectory of "C:\Users\USERNAME". In this case, the file size is usually 81,920 bytes (15% of all these files), 86,016 bytes as well as 10 other variants. There is no embedded description in this file. These days, this is rather unusual This file is no part of Microsoft Windows. This particular software does not have a visible window, and does not appear on the taskbar. Windows starts the process each time that the computer boots up (Registry: MACHINE\Run, Run, win.ini, Winlogon\Shell, Userinit, DEFAULT\Run). Spoolsv.exe is capable of track other applications.
- A spoolsv.exe file has a 42% certainty of being dangerous if it is found in a subdirectory of C:\Windows. In this case, the file size is usually 1,790,464 bytes (57% of all these files), 986,624 bytes, 1,082,329 bytes or, as the case may be, 32,260 bytes. The spoolsv file has none of the usual file information, such as version number, etc. It does not come from Microsoft and is not part of the operating system. This file can be found in the Windows folder; however, it is not a Windows system file. Spoolsv.exe is capable of interpret keystrokes, hides its presence from system tools as well as supervise programs.
- A spoolsv.exe file has a 86% certainty of being dangerous if it is found in the C:\Windows directory. In this case, the file size is usually 5,929,388 bytes (50% of all these files) or, as the case may be, 94,208 bytes.
- A spoolsv.exe file has a 56% certainty of being dangerous if it is found in the Windows Temp directory. In this case, the file size is usually 20,804 bytes.
- A spoolsv.exe file has a 64% certainty of being dangerous if it is found in a subdirectory of "C:\Program Files". In this case, the file size is usually 640,512 bytes.
- A spoolsv.exe file has a 80% certainty of being dangerous if it is found in the C:\Windows\System32\drivers directory. In this case, the file size is usually 145,920 bytes.
- A spoolsv.exe file has a 60% certainty of being dangerous if it is found in a subdirectory of C:\Windows\System32. In this case, the file size is usually 540,672 bytes.
If you see this file on your hard drive or in Windows Task Manager, please make sure that it is not a malicious variant. It's a fact that many trojans try to cloak their true identity by calling themselves spoolsv.exe. With the above information or by using tools like Security Task Manager you can determine if, in your case, the file is an undesirable variant.
What do other computer users say about spoolsv?
|Printer Spooler Service |
|It keeps taking up my entire CPU, clogging the system. I have Windows2000, and I don't know how a printer spooler can use 90+ percent of my CPU for 10+ minutes! |
|Follow RMANN's direction. It was not a virus for me, WinXP. But it was 99% cpu. (further information...) |
Summary: 293 users judge spoolsv.exe to be an essential file that should not be touched. 38 users consider it harmless. However, 57 users consider this to be a suspicious process and would like to get rid of it. For this reason, 108 users have already deleted spoolsv.exe. source: file.net
How to uninstall the program or mIRC
To remove Spooler SubSystem App from your computer, please follow the manual instructions below or use an automatic uninstaller product.
- Click the Windows Start Button. In Windows 8, look for Control Panel.
- Click Control Panel.
- Click Uninstall a program.
- Look for the program or mIRC in the list of available programs.
- Click Uninstall.
How to tell if spoolsv.exe (Spooler SubSystem App) was uninstalled cleanly
After uninstalling, restart your computer. Then start Windows Explorer and see if there is still a folder with the name of the software under C:\Program Files. Be sure to check the Registry as well for remnants of Spooler SubSystem App. To do this, start "Regedit", then look under "HKEY_LOCAL_MACHINE" > "Software" for Spooler SubSystem App or the name of the producer. Always keep in mind that only a computer professional should ever directly delete entries in the Windows Registry.
What to do if a program does not uninstall
The easiest way to remove any kind of software cleanly and accurately is to use an uninstaller tool. Because the uninstaller automatically creates a backup, there is no risk of anything going wrong.
Last but not least
If Windows not working quite right for you, or if startup is taking a long time, or spoolsv.exe is causing problems for you, a good Registry Cleaner may very well help. This is especially effective when it comes to older computers that have accumulated vast quantities of "garbage data" as the result of many software installs and uninstalls.