What is nlnotes.exe?

The .exe extension on a filename indicates an executable file. Executable files may, in some cases, harm your computer. Therefore, please read below to decide for yourself whether the nlnotes.exe on your computer is a Trojan that you should remove, or whether it is a file belonging to the Windows operating system or to a trusted application.

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Nlnotes.exe file information

The process known as IBM Lotus Notes/Domino belongs to software Lotus Notes (version 6.5.5 RA2) by IBM (

Description: Nlnotes.exe is not essential for the Windows OS and causes relatively few problems. Nlnotes.exe is located in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 1,114,112 bytes (27% of all occurrences), 1,044,529 bytes and 5 more variants. 
The nlnotes.exe file is not a Windows core file. The program can be removed using the Control Panel's Add\Remove programs applet. The program uses ports to connect to or from a LAN or the Internet. Therefore the technical security rating is 17% dangerous; however you should also read the user reviews.

Uninstalling this variant: The software publisher IBM provides direct support ( and update information ( You could completely remove Lotus Notes or Lotus Notes 7.0.2 de (Control Panel ⇒ Uninstall a Program).

Recommended: Identify nlnotes.exe related errors

If nlnotes.exe is located in a subfolder of C:\, the security rating is 56% dangerous. The file size is 2,752,512 bytes. The process has no file description. The file is not a Windows system file. The program is not visible.

Important: Some malware camouflages itself as nlnotes.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the nlnotes.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.


User Comments

part of Lotus Notes Client
It is IBM Lotus Notes
  OneStrangeLife   (further information)
when i open any application nlnotes.exe error as occured
  essel soft sysyem  
Part of Lotus Notes
This is the binary executable for Lotus Notes
  Jeff Brost   (further information)
Lotus Notes
It can sometimes hug CPU resources. Killing Notes Process and reopen Notes again can sometimes fix the problem.

Rating chart

Summary: Average user rating of nlnotes.exe: based on 10 votes with 7 user comments. 8 users think nlnotes.exe is essential for Windows or an installed application. One user thinks it's neither essential nor dangerous. One user thinks nlnotes.exe is dangerous and recommends removing it.

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Best practices for resolving nlnotes issues

A clean and tidy computer is the key requirement for avoiding problems with nlnotes. 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.

To help you analyze the nlnotes.exe process on your computer, the following programs have proven to be helpful: Security Task Manager displays all running Windows tasks, including embedded hidden processes, such as keyboard and browser monitoring or Autostart entries. A unique security risk rating indicates the likelihood of the process being potential spyware, malware or a Trojan. Malwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

nlnotes.exe [all]