Is it safe to delete .dll files?
Software programs place DLL files in one or more folders during the installation. These files contain code that tells programs how to operate.
Safest to not delete
If you are thinking about deleting an unknown DLL file, it is likely best to leave it alone. The reasoning behind this logic is that some programs share these files, so deleting a certain DLL file may unintentionally cause issues. That is to say, deleting a DLL file could cause one or more other programs to stop functioning correctly, if at all.
Hard to find
Some software programs may also install DLL files into multiple folders outside the Program Files folder (where most programs are installed). Finding these DLL files can be quite difficult and deleting them can be hazardous.
If you must delete, copy first
As we mentioned previously, if you are not sure if a DLL file is used by another program, we recommend leaving it alone. However, if you must delete the DLL file, we suggest you make a copy of it first. Then, if you encounter a problem with another program that requires the use of the DLL file you just deleted, you can restore the file from the backup.