warningLauncher ErrorsAffects: All versions
How to Fix Launcher Download Blocked by Antivirus
Fix Launcher Download Blocked by adding the .minecraft folder to your antivirus exclusion list.
Quick Fix
Add an exclusion for .minecraft folder in your antivirus settings.
Error Message
File download blocked / Threat detected in downloadHow to Fix
1
Add .minecraft folder to antivirus exclusions
2
Add the Minecraft launcher to the antivirus allow list
3
Disable real-time scanning temporarily for the initial download
4
If Windows SmartScreen blocks it, click 'More info' then 'Run anyway'
Common Causes
- Antivirus flagging Java or game files as threats (false positive)
- Windows Defender SmartScreen blocking the launcher
- Browser blocking downloads from Mojang servers
Diagnostic Steps
- Open antivirus settings
- Add exclusion for %appdata%/.minecraft (Windows) or ~/.minecraft (Mac/Linux)
- Retry the download
- Re-enable real-time scanning after
FAQ
Is it safe to exclude Minecraft from antivirus?
Yes, as long as you download Minecraft from official sources (minecraft.net). The official files are safe but can trigger false positives.