Ok. Before i start welcome to the forum fellow exile :+1:t6:.
I cannot know your experience in this game, so accept my apologies for explaining the situation like i speak to a new player.
Let’s start then!
In order to fix a vault you need to go to your knowledge section, use feat points, survivalist section, box maker and unlock this.


Now this vault do not exist in your construction hammer menu…

… Unless you play single player creative mode

So in order to fix a vault you need an artisan table

Please check the photos carefully because the filters are very important. Sometimes while in crafting stations we may accidentally press R3 and change the filters so we are not able to see all our crafting items. If you wish to see everything you are able to fix you need “showing all”

If you need only the vanilla, press R3 (because all dlc items makes the bench recipes confusing) and choose “showing none”

Now if you choose just any dlc items keep pressing R3 and you’ll see only dlc items

So this is how we fix vaults normally without creative mode.
Let’s see what’s the space you need to place it.
In order to place it you need a space 4x5.


But sometimes it can be glitched to 4x4, yet i wouldn’t suggest it. Using glitches on official servers never went to anything good


As you see in the new character i started 4 days ago in a new official server, i am able to fix a vault (i am still a hobo here sorry for this photo :rofl:)

Now. If you already know all these above and you already checked filters and all these s…t and your toon still cannot fix vaults i have 2 last suggestions.
Go single player or another server and see if you can fix a vault.
A) If you can fix a vault on single player send report to Zendesk for this particular problem in this particular server but explaining that you can do it on other servers or single player
B) If you cannot find it and fix it on other servers or single player then delete game and install again.

I hope i helped m8, may Crom be with you.
Welcome to the forum again :metal:.

Ps. @Community please update the rank of this member so he’ll be able to upload photos with his issue, thank you in advance!