# How to Reindex Windows Core Wallet

This guide will help resolve “**No block source available**” and “**out of sync**” Windows core wallet errors.

To begin, make sure you have the [latest wallet](https://github.com/official-zoin/zoin/releases) version.

In this article, we will work on Windows (any version apply)

* **Images displayed are showing the previous wallet, version 1.0.0.0. The procedure is THE SAME for the latest version**

**IMPORTANT**

Before proceeding you **MUST** backup your **wallet.dat** file that you can find in you **AppData** folder. You can even wipe clean all the files in Noir folder inside AppData, but **PLEASE** backup your wallet file somewhere safe first.

####

#### **Step1** <a href="#step1" id="step1"></a>

**Download the latest wallet version, in this case the Windows version** [**here**](https://github.com/official-zoin/zoin/releases)

![](https://zoinofficial.com/wp-content/uploads/2018/03/new_wallet_01314-181x300.png)

#### **Step 2** <a href="#step-2" id="step-2"></a>

**VERY IMPORTANT**: before extracting the .zip file, you **MUST** whitelist the file on your Firewall/Antivirus that runs on your system. If you don’t do so, you won’t be able to fully extract the .zip file and the destination folder will be empty.

* For **Windows 10** users: you might want to follow this [guideline](https://support.microsoft.com/en-us/help/4028485/windows-10-add-an-exclusion-to-windows-defender-antivirus) regarding Windows Defender

#### **Step 3** <a href="#step-3" id="step-3"></a>

Once unzipped, you will see a single file, in this case named **noir\_core.exe**

![](https://zoinofficial.com/wp-content/uploads/2018/02/zoin_c.png)

#### **Step 4** <a href="#step-4" id="step-4"></a>

Now we will use Windows Command line prompt (**cmd**) to navigate to the folder where the wallet .exe file is and launch it from there with the additional argument “**-reindex**” (without quotes).

Click on the “**start**” icon on the bottom **left** or hit the “**Windows** ” key on the keyboard.\
A search bar will appear and next type **cmd**, press **Enter**.

![](https://zoinofficial.com/wp-content/uploads/2018/02/cmd.png)

Windows Command prompt will open

![](https://zoinofficial.com/wp-content/uploads/2018/02/cmd1.png)

####

#### **Step 5** <a href="#step-5" id="step-5"></a>

Now navigate to the **Wallet Folder** and find the previously renamed .exe file

![](https://zoinofficial.com/wp-content/uploads/2018/02/folder_w.png)

####

#### **Step 6** <a href="#step-6" id="step-6"></a>

Issue the following command:

`noir_wallet.exe -reindex`

![](https://zoinofficial.com/wp-content/uploads/2018/02/reide.png)

The wallet will launch and display the block reindex count.

Once the wallet has finished reindexing, it will add peers and begin syncing.

Upon completion, the wallet may be closed by choosing the “**exit**” option in the wallet’s **File** menu.[<br>](https://zoinofficial.gitbooks.io/documentation/introduction/desktop-wallet-troubleshooting.html)


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