Sia-UI: Performing a clean install

What’s this document about?

Sia-UI is great for storing Siacoin, uploading data to the Sia network, or lending hard drive space for others to use.

It’s possible that you might have to perform a clean install of Sia-UI if you run into a problem that can’t be solved by other means.

During a clean install, two primary things are deleted:

  • The Sia data folders
  • The Sia-UI application, in certain circumstances

But don’t worry, restoring your balance of Siacoin is easy as long as you have your original wallet seed.

In this document

  1. Your Sia wallet seed
  2. Deleting the Sia data folders
  3. Deleting and re-downloading Sia-UI
  4. Setting Sia-UI up again

Your Sia wallet seed

When you first generated your wallet, you were given a 29-word seed. This seed is the master key for your Sia wallet and your Siacoin balance. Your Siacoin is always safe as long as you, and only you, have your seed.

The seed is required for this process, so make sure you have it handy. We’ll use it towards the end of the document.

If you don’t have your seed, do not proceed with these steps.

Deleting the Sia data folders

Sia-UI stores its data in specific folders. This includes things like the entire blockchain and your wallet info. We need to delete these, but first we need to find them. There are two easy ways to locate the folders.

Note: Quit Sia-UI before deleting the data folders.

Navigate directly to the location below, depending on your OS.

Windows: %UserProfile%\AppData\Roaming\Sia-UI\sia

Linux: ~/.config/Sia-UI/sia/

Mac: ~/Library/Application Support/Sia-UI/sia/


Use Sia-UI

If you've updated to v1.3.1 or later, you can easily find these folders by going to the About tab in Sia-UI and clicking:

Show Sia Data

Once you find the /sia folder:

Delete it.

Reboot your computer after deleting this folder.

Deleting and re-downloading Sia-UI

Sia-UI installs where it is downloaded, unless moved. For Windows and Linux, you’ll see a folder that is named something like:


On MacOS, you’ll simply see the Sia-UI icon.

While not required, deleting and re-downloading the application files will ensure you are on the latest version. Drag the folder containing the Sia-UI app into the trash if you wish to.

Learn how to download and install Sia-UI.

Setting Sia-UI up again

At this point you’ve deleted the Sia data folders and made sure you’re updated to the latest version of Sia-UI. Now you’ll need to load your old seed back in to make sure your Siacoin balance is restored.

When you open Sia-UI, you’ll probably notice is that the blockchain is no longer synchronized. This is normal, and it will sync again as long as Sia-UI is open.

Note: The blockchain must be fully synced before you can reload your seed.

Once the blockchain is synced, go to the Wallet tab and choose Load a wallet from a seed as shown above.

Enter your seed in the box that appears.

Sia-UI will then scan the blockchain for any Siacoin associated to your seed. This may take a while, but once it’s done your Wallet will show your previous Siacoin balance. 


If you have any issues with this process, let us know! Send an email to [email protected] and we’ll get back to you as soon as we can.

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