This file is associated with Microsoft Windows HTTP Services. WinHTTP is used by server applications that communicate with HTTP servers. You can read more about how it is used on Microsoft's About WinHTTP page.
winhttp.dll is missing in Windows 11 | How to Download and Fix Missing DLL File Error
Recover winhttp.dll from Recycle Bin. The simplest possible cause of a "missing" winhttp.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 winhttp.dll with a free file recovery program.
Run a virus/malware scan of your entire system. Some winhttp.dll errors could be related to a virus or other malware infection on your computer that has corrupted the DLL file. It's even possible that the error you're seeing is related to a hostile program that is masquerading as the file.
