migration sccm os 2012 4r version 2203 to os 2022 and version 2403

For SCCM version 2403, the supported SQL Server versions are SQL 2017, SQL 2019, and SQL 20221. Please ensure that you’re running a 64-bit version of SQL Server to host the site database2.

As for the Operating System, starting from SCCM version 2403, Windows Server 2012/2012 R2 operating system site system roles are not supported345. Therefore, it’s essential to upgrade your operating system to a newer version before attempting the SCCM upgrade5.

Here are the general steps for migrating SCCM:

Plan for Migration: Familiarize yourself with sites and hierarchies in Configuration Manager1. Install a Configuration Manager current branch hierarchy to be the destination hierarchy before you migrate data from a supported source hierarchy1.

Set Up Management Features: Set up the management features and functions that you want to use in your destination hierarchy before you start to migrate data1.

Plan for Overlap: Plan for overlap between the source hierarchy and your destination hierarchy1. Assign each new client in the destination hierarchy to a specific site in that hierarchy instead of using automatic site assignment1.

Migration Planning: Use the following articles to help you plan how to migrate a supported source hierarchy to a Configuration Manager destination hierarchy1:

• Prerequisites for migration
  • Administrator checklists for migration planning
    • Determine whether to migrate data to Configuration Manager current branch
      • Plan a source hierarchy strategy
        • Plan a client migration strategy
          • Plan a content deployment migration strategy
          Update to 2403: Update 2403 for Configuration Manager current branch is available as an in-console update2. Apply this update on sites that run version 2211 or later2. Enable HTTPS or Enhanced HTTP: HTTPS or Enhanced HTTP should be enabled for client communication from this version of Configuration Manager2.

Please note that these are general steps, and the exact process may vary based on your specific environment and needs.