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What does the sqlservr.exe file do?

The sqlservr.exe process is also known as SQL Server Windows NT (Version - 64 Bit) or, as the case may be, MSSQL$PTPROFESSIONALDB and is a part of Microsoft SQL Server (Version 2005 Express Edition, 2008 Database Engine, 2005, 2000, 2005 Tools Express, 2016 LocalDB) or, as the case may be, SQL Server (SQLEXPRESS). This software is produced by Microsoft (www.microsoft.com). An obsolete or defective version of sqlservr.exe can cause problems for your computer that can range from slowness to error messages such as these:

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What you should know about sqlservr.exe SQL Server Windows NT

sqlservr.exe is not part of Windows, but it is important nonetheless. The file sqlservr.exe is found in a subdirectory of "C:\Program Files". Frequently occurring are file sizes such as 13,179,660 bytes (70% of all these files), 7,520,337 bytes as well as 22 other variants.
It is the service "MSSQL$ADONISCE30".
The program executes in the background, and can only be terminated using Windows Task Manager. It is no part of Microsoft Windows. The file has a digital signature. This confirms that the producer has been registered with a certificate authority. Sqlservr.exe is capable of track other applications as well as transmit information from computer to the Internet. For this reason, 35% of all experts consider this file to be a possible threat. The probability that it can cause harm is high.

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 sqlservr.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 sqlservr?

Microsoft SQL Server (further information...)
Alexander Pichlbauer
Microsoft SQL Server service. Not dangerous
Dimitris Kavakopoulos
MSSQL Server
sql server service
Microsoft SQL Server service. Can eat up lots of memory due to a bug where it does not release resources correctly. Workarounds are available on the net.
Mr Know It All

Summary: 32 users judge sqlservr.exe to be an essential file that should not be touched. 6 users consider it harmless. For this reason, 6 users have already deleted sqlservr.exe. source: file.net

How to uninstall Microsoft SQL Server or SQL Server

To remove SQL Server Windows NT from your computer, please follow the manual instructions below or use an automatic uninstaller product.

  1. Click the Windows Start Button. You find it in the lower left corner of the taskbar.
  2. Type the word uninstall.
  3. Click Add or remove programs.
  4. Now locate Microsoft SQL Server or SQL Server in the list of displayed applications.
  5. Click the program, and then click Uninstall.
Remove software in Windows 10
sqlservr.exe SQL Server Windows NT fix

How to tell if sqlservr.exe (SQL Server Windows NT) 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 SQL Server Windows NT. To do this, start "Regedit", then look under "HKEY_LOCAL_MACHINE" > "Software" for SQL Server Windows NT 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 sqlservr.exe is causing problems for you, a good Windows diagnostic tool 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.

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