Reviewed community reference
Install and verify the Total Miner Classic Launcher
Download the Windows x64 launcher, verify its SHA-256, understand the unsigned-app warning, and install Classic 1.7.6 safely.
Windows x64; PowerShell for optional manual hash verification.
Download the launcher only from totalminer.world. Before opening it, run the PowerShell Get-FileHash command shown on the Launcher page and compare the entire SHA-256 with the published value.
The current Windows build is intentionally unsigned, so Windows may show Unknown publisher or a SmartScreen warning. Continue only when the download host and SHA-256 match the official page.
Install Total Miner Classic 1.7.6 through the launcher. Future updates download a newly verified release package and replace managed program files while preserving independent save locations. You do not need to manually reinstall for ordinary updates.
Keep a separate backup of world saves before major changes, and use Repair if managed files fail verification. Total Miner 2.5 has no public launcher release yet and remains disabled.