--- title: "Terraria 1.4.5 Server: What Changed for Hosts" url: https://1up-servers.com/en/blog/terraria-1-4-5-server-what-changes/ lastmod: 2026-10-26 --- # Terraria 1.4.5 Server: What Changed for Hosts Terraria 1.4.5 «Bigger and Boulder» changed more for servers than the trailer shows: config fixes, new seeds, world compatibility, crossplay, TShock and tModLoader. By [Baurtock](https://1up-servers.com/en/blog/author/baurtock/) Updated Oct 26, 2026 · 6 min read Read in[es](https://1up-servers.com/es/blog/servidor-terraria-1-4-5-que-cambia/)[en](https://1up-servers.com/en/blog/terraria-1-4-5-server-what-changes/) **Your game server, free**Ready in 60 seconds, no card.[Create free server](https://1up-servers.com/en/signup/) Terraria 1.4.5, «Bigger and Boulder», came out on 27 January 2026, and the hotfixes that followed reached 1.4.5.8 in August. For a Terraria 1.4.5 server it means config fixes, combinable seeds, worlds that cannot go back to tModLoader and a new major TShock. Here is what changed and how our [free Terraria server](https://1up-servers.com/en/terraria/) handles it. To set one up from scratch, see our [free Terraria server guide](https://1up-servers.com/en/blog/free-terraria-server/). - **Version:** the current dedicated server is 1.4.5.8, a hotfix from 23 August 2026. - **Config:** no new `serverconfig.txt` keys, but `language`, `autocreate` and `world` now behave. - **Worlds:** older worlds open in 1.4.5; a 1.4.5 world cannot be used in current tModLoader. - **TShock:** version 6.2.1 supports 1.4.5.8. **tModLoader:** stable is still on 1.4.4. - **Crossplay:** PC, mobile and servers already meet on the same version; consoles come with 1.4.6. ## 1. Release dates and the server download Re-Logic [announced the date](https://store.steampowered.com/news/app/105600/view/1821922921811448) on 14 January and released 1.4.5 [on 27 January 2026](https://store.steampowered.com/news/app/105600/view/1822556746169234) on PC, console and mobile at once, except the Chinese mobile edition. The launch post linked the 1.4.5.0 dedicated server and reminded players that "the latest version is always located at the bottom of Terraria.org". Hotfixes followed through the spring. The big one, [1.4.5.7](https://store.steampowered.com/news/app/105600/view/1841579228663704), landed on PC on 19 August with a balance pass, and [1.4.5.8](https://terraria.wiki.gg/wiki/1.4.5.8) fixed a few of its issues on 23 August. The dedicated server build to run today is `terraria-server-1458.zip`. Every client must be on the same version as the server. ## 2. What changed in the server itself The full [1.4.5.0 changelog on the wiki](https://terraria.wiki.gg/wiki/1.4.5.0) is long, but the server lines are few: - Servers now save the world when the last player leaves. - The `language` option in the server configuration works; before 1.4.5 it was ignored. - `autocreate` works even when it is not in the expected order in the file. - The `world` argument no longer crashes the server when the world does not exist and `autocreate` is set. - A server no longer crashes when it loads a world from a newer version. - Dead players can spectate the others, and `/bossdamage` in chat shows who dealt how much in the last boss fight. The [1.4.5.7 notes](https://terraria.wiki.gg/wiki/1.4.5.7) add a multiplayer block: empty servers only start updating once a client fully connects, slots are no longer reserved for clients that connect and drop, boss bags are no longer deleted by the server, and NPC damage desyncs on high-latency servers are reduced. The wiki's [server page](https://terraria.wiki.gg/wiki/Server) lists no new configuration keys for 1.4.5, so an existing `serverconfig.txt` keeps working. Our [Terraria server config guide](https://1up-servers.com/en/blog/terraria-server-config/) explains every key. **Shortcut: on 1up it takes three clicks** Your free server in 60 seconds. No card. [Create your free Terraria server](https://1up-servers.com/en/signup/?game=terraria) ## 3. Seeds: Skyblock, combinations and secret seeds World creation is where 1.4.5 changed the most. Special seeds can be combined, a new seed menu lists them, and identical worlds with special seeds enabled can now be recreated from a seed. Two additions matter for servers: - **[Skyblock](https://terraria.wiki.gg/wiki/Skyblock)**: you start on a small sky island, with a Shimmer island in the distance. Its seed is `skyblock`. - **[Secret world seeds](https://terraria.wiki.gg/wiki/Secret_world_seeds)**: 37 of them, such as "royale with cheese", which gives each team its own spawn, or "jingle all the way" for endless Christmas. You unlock each by typing it in the seed field. 1.4.5.5 stopped the dedicated server's world creation menu from asking about special seeds after you paste a copied seed code. The seed is only read when a world is created, so set it before the first start. ## 4. World compatibility: forward yes, back no A vanilla world from 1.4.4 or earlier opens in 1.4.5; the changelog even fixes an incompatibility with 1.0.6.1 saves. Going back is the problem. The tModLoader team repeated in every monthly report from [February](https://store.steampowered.com/news/app/105600/view/1825727806708235) to April that "Terraria players and worlds played on the 1.4.5 update can not be migrated to and used on current tModLoader". In practice: keep a vanilla 1.4.5 world and a tModLoader world on separate servers, and back up a world before you open it in a newer version. ## 5. TShock and tModLoader on 1.4.5 **TShock** needed a major version. [TShock 6.0](https://github.com/Pryaxis/TShock/releases/tag/v6.0.0), released on 8 March 2026, added "support for .NET 9 and the Terraria 1.4.5 series", starting with 1.4.5.5. [TShock 6.2.1](https://github.com/Pryaxis/TShock/releases/tag/v6.2.1), from 27 September, supports 1.4.5.8. Plugins built for TShock 5 should be checked for a version 6 build before you update. Our [TShock commands guide](https://1up-servers.com/en/blog/tshock-commands/) covers the commands themselves. **tModLoader** is still on Terraria 1.4.4 content. Its [1.4.5 update page](https://github.com/tModLoader/tModLoader/issues/5070) says the port "will take many months yet" and that 1.4.4 mods and tModLoader will stay available as a legacy version. The [September report](https://store.steampowered.com/news/app/105600/view/1844751498222763) says the team merged the 1.4.5.8 changes into its preview branch, and anyone can test it on the `1.4.5-dev` beta branch on Steam. We will follow it in an upcoming monthly tModLoader status post. ## 6. Crossplay after 1.4.5 Crossplay "has been live on mobile, PC and server for many years", as DR Studios put it in the [February State of the Game](https://store.steampowered.com/news/app/105600/view/1825727806708235): type the server's address and port into any of those clients, on the same version. Consoles get the same address join in 1.4.6, "Phase One of Crossplay"; the [September report](https://store.steampowered.com/news/app/105600/view/1844751498222763) says it is getting its finishing touches, with no date. Our [Terraria crossplay server guide](https://1up-servers.com/en/blog/terraria-crossplay-server/) shows how phones join today. ## 7. Terraria 1.4.5 on 1up On our [Terraria page](https://1up-servers.com/en/terraria/) a new server runs vanilla 1.4.5.8 by default, or tModLoader v2026.07.3.0, the stable 1.4.4 release, if you pick that template: - **Free plan:** 1 server, 4 slots, 2 GB RAM and 6 GB disk, no backups and no mod uploads. - **Server language** in the **Game** tab writes the `language` key that 1.4.5 fixed. - **Seed (new worlds only)** offers Skyblock and the classic special seeds as featured picks; secret seeds can be typed in. - **Cheat protection** writes `secure=1`. UPnP is off because the port is already open to players. - Both templates use the same world file, so make a separate server for tModLoader rather than switching an existing vanilla world. - Changing the version later needs a backup slot, so on Free the version you pick at creation is the one you keep. **Shortcut: on 1up it takes three clicks** Your free server in 60 seconds. No card. [Create your free Terraria server](https://1up-servers.com/en/signup/?game=terraria) Checked against Re-Logic's Steam announcements, the official wiki's 1.4.5 changelogs and the TShock and tModLoader repositories, and against the servers our panel runs, Terraria 1.4.5.8 and tModLoader v2026.07.3.0, on 2026-10-07. **Change log** - 2026-10-07: first version, for Terraria 1.4.5.8. - 2026-10-08: panel names updated: the Game and Server tabs replace the old Settings tab. ## Frequently asked questions On 27 January 2026, on PC, console and mobile at the same time. The latest hotfix, 1.4.5.8, came out on 23 August 2026. About the author[Baurtock](https://1up-servers.com/en/blog/author/baurtock/)Founder, developer and support ## Keep reading [Terraria · 8 min**Best tModLoader Mods for Multiplayer (October 2026)**](https://1up-servers.com/en/blog/best-tmodloader-mods-multiplayer/)[Terraria · 7 min**Is tModLoader Updated for 1.4.5? (Status, October 2026)**](https://1up-servers.com/en/blog/is-tmodloader-updated-for-1-4-5/)[Terraria · 7 min**Terraria Crossplay Server: PC and Mobile on One World (2026)**](https://1up-servers.com/en/blog/terraria-crossplay-server/)