If you have been using TeamViewer for years, check your company’s shared drive, your personal backup SSD, or an old IT deployment folder. Many organizations retain installers for legacy builds to maintain consistency across their device fleet.

TeamViewer 13 is no longer compatible with the latest "Free" versions (which require the newest updates). 🔍 How to Proceed Safely

If you share the (e.g., “Windows XP SP3, just for LAN access”), I can give a safer, more targeted solution.