SHA-256
Check the file hash
If you want to verify the download yourself, compare your EXE against this SHA-256 hash.
2a5113b7209037ced6ebb5dc0091a4a80fbf501ebed64d24e3d0be00ca28046b
Back to Opti
Download OptiLauncher.exe
Public beta
Download Opti.
The latest public Opti Client beta for Minecraft 1.21.11. Download the launcher, sign in with Microsoft and let Opti handle the rest.
Windows download
Opti Launcher
Unsigned beta buildWindows may show an “Unknown publisher” or SmartScreen prompt. You can verify this exact release below before running it.
Verification
Check it yourself.
Here’s the checksum and VirusTotal result for the exact OptiLauncher.exe you’re downloading above.
VirusTotal
1 known false positive
Trapmine flags the unsigned build as Suspicious.low.ml.score. This is a known false positive, not a detection of known malware.
1 flagknown false positive
Why does VirusTotal show 1 flag?
The one flag is from Trapmine and is labelled Suspicious.low.ml.score. It is a known false positive on this unsigned build.
If you want to confirm that independently, you can search the detection name yourself and scan OptiLauncher.exe with VirusTotal, Windows Security or other scanners you trust.
Scan result
VirusTotal — Beta 4.
View the VirusTotal result for this exact release, or scan the launcher yourself if you’d rather verify it independently.
View VirusTotal
Click the eye to view the uploaded VirusTotal scan for Beta 4.
VirusTotal results can change over time as antivirus engines update.
Need help?
Something not launching?
Opti is still in beta. If you hit a problem with login, installation or launching Minecraft, let us know and include the launcher error where possible.
