Fing Desktop: Troubleshooting

Have more questions? Submit a request


Begin Troubleshooting

To isolate the issue, check what the health check says and share a screenshot and/or report with Fing. Also, share the following with Fing:

  • The output of commands: ipconfig and route print from the command line
  • A screenshot of the Error
  • The agent log

To access the agent log files:

  • From Overview, click the Fing Desktop version at the bottom left of the screen
  • This will display two folders to open. You need specific files from each of these folders.
  • Click on Open App Log Folder
  • When the folder opens, you need to compress and share the log.log file (titled 'log' - all lowercase). To compress and share:
    • Right click the file
    • Click Send to
    • Click Compressed zip folder
  • Back in Fing Desktop, click on the second folder Open Service Log Folder
  • Compress all files inside the Service Log folder and follow the same process as above
  • Attach both compressed files to your ticket or e-mail response to Fing 

Copy and paste the following URL into your browser

This will display device information. Copy and paste the text into your reply e-mail to Fing.

Fing Desktop consumes a high percentage of CPU/GPU

Fing desktop may use CPU or GPU. It is used seamlessly by our UI framework to render pages and graphics. You can disable this utilization but maps will not work on Fing Desktop.

To disable Hardware Acceleration:

  • From Overview, click on your username in the bottom left of the toolbar
  • Click Preferences
  • Under the App tab, turn on Disable Hardware Acceleration

My device was not recognized 100% accurately

  • From Overview, click the Devices tab on the left sidebar
  • Select a device
  • Scroll down to Did Fing get it right? and click the red No button with the thumbs down
  • This will bring you to the Improve recognition page. Here, you can:
    • Click Automatic and scan the QR code from your device. Alternatively, there is a web address under the QR code; go to this web address in your browser.
    • Click Manual and manually enter the product details for the device

Fing Desktop will not load or open

Confirm you have the latest version of Fing Desktop. If you have, complete the following steps:


Check your system tray on your PC if Fing Desktop is running in the background. Open Fing Desktop from here To minimize the system tray settings:

  • From Overview, click on your username in the bottom left of the toolbar
  • Click Preferences
  • Disable the setting
  • Under the App tab, turn on Launch Fing at boot


Check the MAC settings if required permissions are enabled for Fing Desktop. To do this:

  • Go to System Preferences
  • Go to Security and Privacy
  • Enable Fing Desktop in the Full Disk Access and Files and Folders sections

This will load up all features and Fing desktop

Discovery Corrupted

  • Delete the network identified by Fing Desktop from Fing Mobile App or Fing Web App
  • Quit Fing Desktop from task manager
  • Reboot device
  • Open Fing desktop again and check if the issue persists

Blank Screen/Scan Error


  • Confirm that you are on the most up-to-date version of Fing Desktop
  • Restart your PC

If restarting your PC does not resolve the issue:

  • Type 'cmd' to bring up the Command Prompt
  • Open the Command Prompt
  • Type the stop service command: sc stop Fing.Agent
  • Type the start service command: sc start Fing.Agent

If the commands are successful, perform a new installation of Fing Desktop. WinPcap may be interrupting with NpCap.

With the new version 2.4.1 and above, we have replaced winPcap with NpCap. To resolve the above issue:

  • Uninstall WinpCap using Revo
  • Disable the Npcap driver service To disable NpCap:
    • Run this command as an admin: sc.exe config npcap start= disabled
    • Uninstall Npcap
  • Reboot your device to safe mode with networking
  • Download and install the new Fing desktop version and open it
  • Reboot to normal mode 


Confirm that you have O.S 10.14.x or above running on MacBook. Fing Desktop is only compatible with O.S 10.14 and above. With earlier versions, it will not work.

To address the blank screen, follow these commands on the terminal:

  • Command 1: /usr/bin/pgrep fingagent
  • Command 2: sudo lsof -nP -iTCP:48080 -sTCP:LISTEN

When running the second command, you will be asked for a password. Enter the login password of your MacBook.

After the 1st command, it will return a number example: 0000. Use this number in the following command: sudo kill -90000(result of 1st command)

Reboot your device.

In addition, you can check under Activity Monitor if multiple Fing agents are running. If yes, quit all the Fing agents, reboot your device and open Fing Desktop.

DNS Error

When Fing Desktop does its normal health checks while running in the background, there is a chance of unreliable DNS resolution by the router. Once this goes unstable, Fing Desktop will warn you. Refresh the scan for Fing Desktop to work and ensure everything is normal.

If you configure the router dns settings with, you will find there are no errors or alerts. DNS resolution being unreliable by the router is common. 

To resolve this issue, flush the DNS. To flush the DNS, clear the router cache and the computer(s) will retain the previous settings. To do this:

  • Turn off both your router and modem
  • While they are off, clear your internet cache from all browsers, and close all browsers
  • Go to command prompt (cmd) run ipconfig /flushdns
  • Run ipconfig /release
  • Run ipconfig /renew

What Operating Systems (OS) is Fing Desktop compatible with?

Fing Desktop is compatible with Windows and MAC operating systems.

  • Fing Desktop supports any version of Windows that is still within its extended support lifetime to current versions. We recommend Windows 10. Windows Server versions are not included.
  • Fing Desktop supports macOS 12 Monterey to current version
  • While we have workarounds for legacy versions, we cannot guarantee they will work and we do not offer support on them. Our recommendation is always to stay up to date with current OS.

Workaround for High Sierra and Mojave

Currently, High Sierra/Mojave is not supported for newer versions of Fing desktop. Older versions of Fing desktop such as 2.6.0 was compatible on a best effort basis with High Sierra/Mojave or older versions.

Fing's developers have shared the following workaround where you can download and still use the Fing desktop version 2.6.0 which is compatible with High Sierra/Mojave.

  • Download the original package of the previous version at
  • Quit the Fing Desktop App, if running
  • Install the package, without running it
  • Disable the access to domain, so new updates will not be fetched. Follow this tutorial, as detailed below:
    • Open the Terminal
    • Type: sudo nano /etc/hosts
    • Block access to by adding this line:
    • Save the file and quit
    • Type: sudo dscacheutil -flushcache
    • Start the Fing Desktop App. Updates will not be received as they cannot reach the central repository.

Workaround for Catalina and Big Sur

Currently, Big Sur/Catalina is not supported for newer versions of the Fing desktop. Fing desktop older version like 4.3.1 was compatible on a best effort basis with High Big Sur/Catalina or older versions.


We have the following workaround, but please note this can only work if you have downloaded Fing from our official website,

Please follow the steps:


    • download the the previous version 3.4.1 from the link

    • Install the .dmg file

    • When the window error message is damaged, don’t click any button

    • open the terminal and type the command line xattr -cr /Applications/ and press enter

    • Click on the cancel button of the warning windows app damaged

    • open the application folder and run fing app


It is also necessary to disable the automatic update from preferences, close the app and restart the app again!

Need Help?

Click the Submit a request button at the top right of the page

Articles in this section

Was this article helpful?
3 out of 5 found this helpful



Article is closed for comments.