LogiLDA.dll missing after updating to Windows 8.1

After updating my Windows 8 to Windows 8.1, I received an error on start-up.

It says:

There was a problem starting C:\Windows\System32\LogiLDA.dll
The specified module could not be found.

What is the problem? Or how can I fix this?

I have an Asus Ultrabook UX31A.


Ok, from what I've seen you can just remove the registry entry for the dll. I tried it already and nothing seems to be messed up with the file missing. It's almost as if someone at MS had LDA installed and didn't bother to clean up the registry before publishing the update.

You can paste this into a batch file and run it as administrator or just open an administrator command prompt and paste it into there to quickly get rid of the entry.

echo Start 
echo # 
echo ######################## Default dirctory for x86 x64 ######################## 
echo # 
echo this command is default system32 directory for x86 OS or x64 OS 
cd %windir% & cd system32 
reg delete "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "Logitech Download Assistant" /f 
reg delete "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "Logitech Download Assistant" /f 
echo # 
echo ######################## Change the dirctory for x64 ######################## 
echo # 
echo this command is x86 application's registry for x64 OS 
cd %windir% & cd syswow64 
reg delete "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "Logitech Download Assistant" /f 
reg delete "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "Logitech Download Assistant" /f 
echo End

I found the code above here.


  • Run Task manager by pressing CtrlAltDel
  • Go to Startup tab
  • Find LogiLDA, right click on it and click Disable

After a restart, the problem is gone.


I had this issue after upgrade to 8.1, and I do have a Logitech mouse.

  • I navigated to the System32 folder and didn't see the file to delete it.
  • Plugged in the USB dongle for the mouse and the hardware installation set ran.
  • I did a reboot to check and make sure it didn't happen again, and the error is gone.

I just called Logitech corporate office and they helped me disable the file without uninstalling it which could disable other files on the computer. Here is what he told me to do. It's a simple fix.

Go to either your start up and search box or go to run

Type in msconfig.

In the System Configuration window click on the start up tab.

Open Task Manager or if it in in the current window under start up you will see the LogiLDA name and then click disable.

Restart up windows and when it comes up your error message shouldn't show up