In some cases, propsys.dll errors could indicate aregistryproblem, a virus or malware issue, or even ahardwarefailure.
How to Fix Propsys.dll Errors
Do not download propsys.dll from a “DLL download” website.
There are many reasons whydownloading a DLL file is a bad idea.

Restore propsys.dll from the Recycle Bin.
The easiest possible cause of a “missing” propsys.dll file is that you’ve mistakenly deleted it.
Run a virus/malware scan of your entire system.
Use System Restore to undo recent system changes.
Reinstall the program that uses the propsys.dll file.
If the error happens when you use a particular program, reinstalling the program should replace the file.
Try your best to complete this step.
Update the drivers for hardware devicesthat might be related to propsys.dll.
The propsys.dll file may or may not be related to video cardsthis was just an example.
The key here is to pay very close attention to the context of the error and troubleshoot accordingly.
trigger the sfc/scannow System File Checker commandto replace a missing or corrupt copy of the propsys.dll file.
Since this DLL file is provided by Microsoft, theSystem File Checkertool should restore it.
Install any available Windows updates.
Manyservice packsand other patches replace or update some of the hundreds of Microsoft distributed DLL files on your gear.
The propsys.dll file could be included in one of those updates.
Test your memoryand thentest your hard drive.
If the hardware fails any of your tests, replace the memory orreplace the hard driveas soon as possible.
Repair your installation of Windows.
Use a free registry cleanerto repair propsys.dll related issues in the registry.
We rarely recommend the use of registry cleaners.
They’re included here as a “last resort” attempt before the destructive step coming up next.
Perform a clean installation of Windows.
This will erase everything from thehard driveand install a fresh copy of Windows.
If none of the steps above correct the propsys.dll error, this should be your next course of action.
All the information on your hard drive will be erased during this step.
Troubleshoot for a hardware problem if any propsys.dll errors persist.
After a clean Windows installation, your DLL problem can only be hardware related.