How do I enable TLS 1.2 for ArcPad?

Answer

To meet the latest security protocols for data integrity and network security, Esri is making software updates across ArcGIS to support TLS 1.2. As part of improving ArcGIS Online security, Esri is requiring TLS 1.2 connections for ArcGIS Online services. Action is required to ensure continued access to these services.

Note:
See the Product Life Cycle pages on the Esri Support site for the support status of each released version of ArcPad.

ArcPad for Windows Mobile:
Syncing feature services and upload/download ArcPad Packages require TLS 1.2 support provided by the OEM

ArcPad for Windows Desktop:
TLS 1.2 must be enabled through the operating system. This enables all applications on the system that depend on the Microsoft .NET Framework to use TLS 1.2.
See: How To: Configure Windows to use TLS 1.2 for applications that use the .NET4 Framework

Note: 
See the Esri TLS Support Page for instructions on how to use TLS 1.2 with other Esri products.