Upd !!hot!! — Netfx20sp1

Compare the file hash (SHA-1 or MD5) with official Microsoft update catalogs.

The generic name netfx20sp1 upd is often renamed by third-party sites. To know precisely what you are dealing with: netfx20sp1 upd

Search Microsoft Update Catalog or Microsoft Download Center for "Microsoft .NET Framework 2.0 Service Pack 1" and the related KB number to get the appropriate package for your OS and architecture. Compare the file hash (SHA-1 or MD5) with