Download Installation Prerequisites: An X.509 digital certificate (DSC Token/PFX) Windows 7 or later (including Windows 11 and Windows Server 2022), Windows Server 2012/16 (32/64 bit) Microsoft .NET Framework 4.0(Get Installed with Neosigner) Download *NeoSigner will always be installed with the latest version exclusively. Versions Features 1.0 The “Sign and Protect” feature has been integrated into a single add-on for signing password-protected files.Focus on making customer experience better. 2.1 (Current) Merge multiple PDFs into one.Sign and automatically password-protect PDFs after signing.Enable LTV (Long-Term Validation) Signing for enhanced document trust.Print PDFs directly after signing for added convenience.