Helper.dll errors are caused by situations that lead to the removal or corruption of the helper DLL file.
How to Fix "All .DLL files are missing" Error in Windows 10/8/7 (100% Works)
Follow these steps in the order they are listed below to try the simpler solutions first.
Recover helper.dll from Recycle Bin. The simplest possible cause of a "missing" helper.dll file is that you accidentally deleted it.
If you suspect this, but you've already emptied the Recycle Bin, you may be able to recover the file using a free file recovery program. Remember, only do this if you're certain the file was working properly before it was deleted (i.e., not corrupted or malicious).
