More on the latest variant of 'Petya' Ransomware outbreak here
As a workaround to a problem you may need to register, or unregister, a .DLL (or other) file. To do this, run the Windows program regsvr32 at a command prompt, or from Start | Run.
Applies to the following Sophos product(s) and version(s)
Not product specific
From the desktop, on the taskbar, select Start | Run | Type: cmd.exe | Press return.
Important: For Windows Vista and higher you must run the command prompt as 'an administrator'. On Windows 8 (for example) go to the Start screen, simply type 'cmd' to search for the app, right-click the app returned and select 'Run as administrator' at the bottom of the screen. Example:
A command prompt opens. You should either use 'CD' to change to the relevant directory (folder), or enter the full path to the file.
To register (or re-register) a file, type:
where <path> is the path to the file, and <filename> is the name of the file.
To unregister a file, type:
regsvr32 -u <filename>.dll
regsvr32 -u <path>\<filename>.dll
For details, see:
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