OBS! Outdated article.
Error message URLogiLDA.dll is missing
After updating to Windows 8.1 it will be an error about the file LogiLDA.dll. To remove the references in the registry, you can run a command file (Batch file) or just run it in a command window as Administrator.
echo Start
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 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