DOS header does not contain MZ signature.' it means you have got an encrypted DLL It means the DLL file does not have a valid MZ/PE header so you cant open/modify it. While in Safe Mode, use File Explorer to locate and delete the files that were previously locked, then simply restart your device as you would normally to exit Safe Mode. dll file into Reflector and you get: 'Assembly-CSharp (this could change, depending on the name of the file), File is not a portable executable. On 'Startup Settings,' press F4 to enable Safe Mode. There is no option to unblock from these location, and hunting down the zip file in the download folder or even worse. Under 'Advanced Startup,' click the Restart now button. You can either disable the app from loading at startup, or you can boot into Safe Mode to unlock and delete the file. However, if the application has a service that loads during startup, it might keep locking a file as soon as you sign in. Usually, when you come across a locked file, you can simply restart your device to unlock it. Once you complete these steps, you can go ahead and safely delete or modify the unlocked file.

Important: If the file is being used by more than one process, repeat the steps to close all handles.

Select the file from the search result.īehind the search window, in 'Process Explorer,' right-click the locked file, and select Close Handle to unlock it.

Type the name of the locked file in the field, and click the Search button. ( You can refer to these instructions if you need additional help on how to do this task.)ĭouble-click the procexp.exe if you're running a 32-bit version of Windows 10 or procexp64.exe if you're running a 64-bit version10 to launch the app.Ĭlick on File, and select the Show Details for All Processes option.Ĭlick on Find, and select the Find Handle or DLL option.

Extract the content inside the ProcessExplorer.zip compressed folder.

Download Process Explorer from this Microsoft website.

If you need to unlock a file currently being used by a program or system process and you can't restart your device, you can use these steps:

How to unlock files using Process Explorer

How to unlock files using Process Explorer.

Unlock a dll file