Windows 10 update, System32\LogiLDA.dll missing

Well i finally did the windows 10 free upgrade and now getting a error message when i boot up that im missing C: Windows\System32\LogiLDA.dll

only started when i did the upgrade from windows 7

how do i fix it?

Also could this be the reason my computer is laggy and desktop icons flash every now and then?

never had these problems til windows 10

  1. Did you make any hardware and software changes in your computer prior tot this issue?
  2. What is the make and model of your computer?

This error occurs due to the incompatible version Logitech software, more specifically Logitech Download Assistant. This belongs to the Logitech mouse. Follow the steps below.

Method 1: Uninstall and Reinstall the Logitech Drivers from the manufacturer’s website.

Steps to uninstall the Logitech Drivers.

1.     Press “Windows Logo” + “X” keys on the keyboard.

2.     Click on “Device Manager” from that list.

3.     Search for the Mice and other pointing devices from the device list, right click on it and then select “Uninstall”. On the un-installation window, if you have an option: “Delete the driver software for this device” you may select that and then remove the corrupted drivers from the computer.

4.     Follow the on-screen instructions to complete it and then restart the computer if prompted.

5.   Download the latest Graphics adapter driver setup file from the manufacturer’s website and install it.

If above Method doesn’t fix the issue follow next Method.

Method 2: Disable LogiDA from Task Manager.

  • Open Task Manager by right click on the Taskbar.
  • Go to the Startup tab and find LogiDA
  • Right click on LogiDA and click on Disable
  • Now we have temporarily disabled the  Logitech Download Assistant from starting with the computer. Now we have to delete the entry so we won’t be bothered with it again. To do so
  • Press Win + R and type in REGEDIT.
  • Go to HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run key.
  • Find Logitech Download Assistant and delete the entry
  • Now reboot the system for changes to take effect.

Registry disclaimer

Note: This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base: 322756 (

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