NetworkConnectLog v1.16
Copyright (c) 2013 - 2023 Nir Sofer

See Also


NetworkConnectLog is a simple utility that repeatedly scans your local area network (Using ARP and Netbios protocols) and add a new log line every time that a new computer or device connects to your network, and when a computer or device disconnects from your network.
After the connect/disconnect log lines are accumulated, you can easily export the log lines to comma-delimited/tab-delimited/html/xml file.

System Requirements

  • This utility works on any version of Windows, starting from Windows 2000 and up to Windows 11. Both 32-bit and 64-bit systems are supported.

Known Issues

  • In some circumstances, Smartphone devices don't respond to ARP requests, even when the device shows that it's actually connected to the network. In this situation, NetworkConnectLog will show that the device is disconnected.

Versions History

  • Version 1.16:
    • Fixed to display a check mark when the 'Put Icon On Tray' option is turned on.
  • Version 1.15:
    • Updated to work properly in high DPI mode.
    • Updated the internal MAC addresses database.
  • Version 1.13:
    • Updated the internal MAC addresses database.
  • Version 1.12:
    • Updated the internal MAC addresses database.
  • Version 1.11:
    • Updated the internal MAC addresses database.
  • Version 1.10:
    • Added option to set the interval between scans, in milliseconds ('Scan Options' window).
    • Added option to automatically export the log to a file on every change (In 'Scan Options' window).
  • Version 1.06:
    • Added option to choose another font (name and size) to display in the main window.
  • Version 1.05:
    • Added 'Always On Top' option.
  • Version 1.04:
    • Updated the internal MAC addresses database.
  • Version 1.03:
    • Fixed the sorting of 'IP Address' column.
  • Version 1.02:
    • Added 'MAC Address Format' option (XX-XX-XX-XX-XX-XX, XX:XX:XX:XX:XX:XX, or XXXXXXXXXXXX).
  • Version 1.01:
    • Fixed the sorting of the 'IP Address' column.
  • Version 1.00 - First release.

Start Using NetworkConnectLog

NetworkConnectLog doesn't require any installation process or additional dll files. In order to start using it, simply run the executable file - NetworkConnectLog.exe

After you run NetworkConnectLog.exe, it immediately starts to scan your network. The first scan is fast, in order to detect all computers and devices that are currently connected to your network. After the first scan, NetworkConnectLog repeatedly scans your network in lower speeds in order to check if computer/devices connected or disconnected to your network. Every time that NetworkConnectLog detects that computer or device connected or disconnected to your network, a new log line is added.
If from some reason NetworkConnectLog fails to detect your network properly, you should go to the 'Scan Options' window (F9) and choose the correct network adapter or IP addresses range to scan.

Translating NetworkConnectLog to other languages

In order to translate NetworkConnectLog to other language, follow the instructions below:
  1. Run NetworkConnectLog with /savelangfile parameter:
    NetworkConnectLog.exe /savelangfile
    A file named NetworkConnectLog_lng.ini will be created in the folder of NetworkConnectLog utility.
  2. Open the created language file in Notepad or in any other text editor.
  3. Translate all string entries to the desired language. Optionally, you can also add your name and/or a link to your Web site. (TranslatorName and TranslatorURL values) If you add this information, it'll be used in the 'About' window.
  4. After you finish the translation, Run NetworkConnectLog, and all translated strings will be loaded from the language file.
    If you want to run NetworkConnectLog without the translation, simply rename the language file, or move it to another folder.


This utility is released as freeware. You are allowed to freely distribute this utility via floppy disk, CD-ROM, Internet, or in any other way, as long as you don't charge anything for this and you don't sell it or distribute it as a part of commercial product. If you distribute this utility, you must include all files in the distribution package, without any modification !


The software is provided "AS IS" without any warranty, either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. The author will not be liable for any special, incidental, consequential or indirect damages due to loss of data or any other reason.


If you have any problem, suggestion, comment, or you found a bug in my utility, you can send a message to

Download NetworkConnectLog

NetworkConnectLog is also available in other languages. In order to change the language of NetworkConnectLog, download the appropriate language zip file, extract the 'networkconnectlog_lng.ini', and put it in the same folder that you Installed NetworkConnectLog utility.

LanguageTranslated ByDateVersion
Arabic Mohamed.Bajdouai02/07/2015NetworkConnectLog v1.04
Brazilian Portugueseigorruckert25/09/20161.11
DutchJan Verheijen09/12/20231.16
French Jaff (Oprea Nicolae)08/03/20141.03
French Largo04/10/20201.13
German «Latino» auf WinTotal.de10/12/20231.16
Greek geogeo.gr28/10/20201.13
Italian Jaff (Oprea Nicolae) e B.R.31/08/20221.03
Persian ZendegiyeSabz19/12/20231.16
Romanian Jaff (Oprea Nicolae)21/01/20161.06
RussianDmitry Yerokhin04/10/20201.13
Simplified Chinese DickMoore24/10/20221.15
SlovakFrantišek Fico13/12/20231.16
Spanish Jaff (Oprea Nicolae)08/03/20141.03
Traditional Chinese Danfong Hsieh19/09/20161.11
Turkish HARUN ARI09/12/20231.16
Valencian Jaff (Oprea Nicolae)21/01/20161.06