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These options affect all versions, even when it isn't being handled by ViaVersion.
checkforupdates check-for-updates- default: true (Boolean)
This option indicates whether we should check for updates when the server boots and when an operator logs in, this can be a huge benefit to ensure that bugs are fixed as soon as new versions are available. We use update.viaversion.com to handle checking for updates, so ensure that it is allowed through your firewall if you wish to use this feature.
Note: this was renamed from checkforupdates so you have to adjust the new setting to match the value of the old one
send-supported-versions - default: false (Boolean)
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This allows you to block certain versions from logging into your server, it is similar to block-protocols but allows you to use version names like "1.17" or "<1.17". For example ["<1.17"] would block allow versions less than 1.17. The less than operator and greater than operator are both supported for these versions. See here for a generator
block-disconnect-msg - default: "You are using an unsupported Minecraft version!" (String)
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It is not recommended to fake this value if your server is running 1.19 or later, as 1.20.5 clients have stricter chat handling and may get kicked otherwise.
handle-invalid-item-count - default: false (Boolean)
andles items with invalid count values (higher than max stack size) on 1.20.3 servers.
1.9 & 1.10 clients on 1.8 servers options
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