mod
Lock & Block SecurityMinecraft mod for 1.21.1
Adds fun and creative security features to protect your stuff
- Latest version
- 0.10.1+1.20.1
- Minecraft
- 1.20.1 to 1.21.1
- Java
- Java 21+
- Loader
- Fabric
- Licence
- GPL-3.0-only
- Downloads
- 81.7k
- Updated
- 8 mo ago
- Available on
- Modrinth
Our hostingHost Lock & Block Security servers
One click and Lock & Block Security is installed with the right loader, on hardware built for it.
- 1.21.1
- Fabric
- One click mod install
- Loader matched for you
- Ryzen CPUs
- NVMe SSD
Screenshots
Click a screenshot to open it. Screenshots are served from the author’s own host and belong to them.
Minecraft versions
Every version Lock & Block Security declares support for, newest first, with the Java runtime that version needs.
Download
From Lock & Block Security’s own host. Nothing is re-hosted here.
LockAndBlock-0.10.1+1.20.1.jar · 0.4 MB · for 1.20.1
45ad4dc05cc3…Older versions15Hide older versions
- 0.10.1+1.21.118 Jan 20261.21.10.4 MB8.6k downloads
6abc2c3797e0…Get - 0.10.016 Jan 20261.21.10.4 MB249 downloads
3901e0769b01…Get - 0.9.011 Aug 20251.20.10.4 MB10.9k downloads
46907dfcc29b…Get - 0.8.023 May 20251.20.10.4 MB36.6k downloads
42fb2ce677bb…Get - 0.7.111 Apr 20251.20.10.4 MB2.1k downloads
987d41a60e8a…Get - 0.7.09 Apr 20251.20.10.4 MB154 downloads
d65299bd3be3…Get - 0.6.123 Oct 20241.20.10.3 MB6.0k downloads
621e0bb0f34f…Get - 0.6.06 Jun 20241.20.10.3 MB4.2k downloads
5a0435da53d7…Get - 0.5.14 Jun 20241.20.10.3 MB116 downloads
8f48fa662f5c…Get - 0.5.04 Jun 20241.20.10.3 MB97 downloads
739d43f2482f…Get - 0.4.126 May 20241.20.10.2 MB577 downloads
04eed2f17758…Get - 0.4.025 May 20241.20.10.2 MB103 downloads
71def3c871f1…Get - 0.3.025 May 20241.20.10.1 MB121 downloads
bd0d39e73952…Get - 0.2.023 May 20241.20.10.1 MB92 downloads
621bf5cc94bb…Get - 0.1.023 May 20241.20.10.1 MB173 downloads
b7ec0d7a681a…Get
Frequently asked
Does Lock & Block Security work on Minecraft 1.21.1?
Yes. 1.21.1 is the newest Minecraft version Lock & Block Security declares support for, and the claim comes from the author's own release metadata rather than from a compatibility list somebody maintains by hand.
Which Minecraft versions does Lock & Block Security support?
Everything the author has declared, from 1.20.1 up to 1.21.1. The full list is in the table above, with the Java runtime each version needs next to it.
Do I need to install Lock & Block Security on the client or the server?
Both. Every player needs it installed and so does the server, so anyone joining without it will be refused.
Which platform or loader does Lock & Block Security support?
Fabric. A build for one platform or loader will not necessarily load on another, so this is the first thing to check before the Minecraft version.
Which Java version do I need for Lock & Block Security?
On the newest Minecraft version it supports, Java 21 or newer. The requirement comes from the Minecraft version you run rather than from the mod itself, so on an older supported Minecraft the answer is that version's Java, not this one.
What licence is Lock & Block Security under?
GPL-3.0-only, as stated by the author on the platform we synced it from. Check the project's own page before redistributing or bundling it.
How do I install Lock & Block Security?
Install the matching loader first, then put the downloaded file in your mods folder and start the game. The loader, the mod and Minecraft all have to be on the same version, which is the usual reason a mod does not appear in game.
Where do I download Lock & Block Security safely?
Start with the author's page on Modrinth, which is where the data here is synced from. MCReference does not host or repackage files. The download link goes to the source recorded for that release; verify the publisher, filename and checksum before running it.
Works on the same versions
Ordered by how much of the recent Minecraft version coverage overlaps, not by popularity.
Is this information wrong or missing something? .