how to stop players from entering the nether minecraft bedrock

For Minecraft Bedrock, the usual way is to block the portal itself rather than trying to truly disable the Nether. Bedrock does not have a simple server.properties switch like Java, so the practical options are a behavior pack or a repeating command block that removes or nullifies Nether portals as they form or when players try to use them.

Simple server/world method

• Use a repeating command block set to Always Active.
• Run a command that detects Nether access and teleports players back, or removes portal blocks near them.
• This is a workaround, not a full Nether disable, but it is the standard Bedrock approach.

Behavior pack method

• Install a behavior pack that blocks Nether portal creation or portal function.
• This is cleaner for a realm or custom world if you want a more permanent solution.
• Bedrock support pages note that portal-blocking behavior packs are a valid way to restrict Nether access.

One-command workaround

A commonly used command-block workaround is to constantly delete portal blocks around players so the portal cannot stay active. The idea is to run it on repeat in a loaded chunk so no one can complete the trip.

Best choice

• For a realm or server , use a behavior pack.
• For a single world , use a repeating command block.
• If you want the simplest reliable answer, Bedrock’s Nether is generally restricted , not fully disabled.

Example setup

Put a repeating command block in spawn chunks and make it always active, then have it remove nether_portal blocks around players or teleport anyone who enters the Nether back to the Overworld. That keeps players from using the portal even though the dimension itself still exists.

TL;DR: On Bedrock, you usually stop players from entering the Nether by blocking portals with a behavior pack or a repeating command block, because there is no built-in full disable switch like Java has.