Dynamic Link Libraries (DLLs) are resource files that run in memory when a linked program executable launches. If you try to remove a DLL file and receive an access denied error, you will need to unload it. Once a DLL file loads into system memory to provide resource linking it will continuously run until unloaded. You can use the Command Prompt to remove a DLL file from memory and allow deletion without receiving an access denied error.
Press the "Windows" and "R" keys simultaneously on your keyboard. This opens a "Run" box on the bottom part of your screen.
Type "CMD" and click the "OK" button. This launches the Windows Command Prompt utility.
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Type "Regsvr32 /u /s C:\Path to file\file.dll" and press the "Enter" key. You must replace "Path to file" and "File.dll" with the actual path to your file and file name.
Type "Exit" and press "Enter" to close the Windows Command Prompt utility.