Folder found on pc

[Adam_200]

Found a folder in program files/common files called DESIGNER with msaddndr.dll inside.
Should i delete it? what is it?

 

[Paul NZ]

no

https://support.microsoft.com/en-us/help/2792179/a-custom-add-in-that-uses-interfaces-in-the-msaddndr-dll-file-does-not

 

[rgd1101]

If you worry about virus/malware. Run anti-malware/virus scan, and not go thru folder and delete file that you don't know about.