MultiDoge - solving errors: Java Not Found, not Syncing and not opening

In this guide, you will learn how to solve MultiDoge opening and slow sync errors of the latest version 1.7.7, and newer.

An issue with java/MultiDoge not opening on Mac

To run view/change environment variables on macOS¹:

% nan
o ~/.zshenv

export JAVA_HOME=$(/usr/libexec/java_home)

% source ~/.zshenv

% echo $JAVA_HOME
/Library/Java/JavaVirtualMachines/jdk-16.jdk/Contents/Home 

Learn more about setting Java variables on macOS

Watch the video:

MultiDoge still won’t open, what should I do?

Follow the instructions to open the application.²

1. Go to .config/MultiDoge or %appdata%\MultiDoge depending on your OS.
2. Back up your wallet. The file has a .wallet extension. Copy it to a safe place. You can put it in DropBox or OneDrive and encrypt it with a password. Better yet, copy the entire folder before deleting it.
3. Delete the MultiDoge folder in .config/ or %appdata%
4. If the folder cannot be deleted because “the file is already open by another program”, open the task manager and end the javaw.exe and MultiDoge.exe processes.
5. Launch MultiDoge.
6. Open your .wallet using File > Open Wallet.
7. Set your preferences using View > Preferences.

If you have any shortcuts for your addresses, they are stored in your .info files, so save those files as well.

Wallet synchronization not working

Method 1: transfer wallet to another application

You will need your wallet passwords in order to export the private key. If you have a private key, use the Exodus wallet. In this app, there is a Move Funds section in the 3-dot drop-down menu. Enter your private key there and it will transfer all funds to your Exodus wallet.

You can also transfer the private key to Dogecoin Core.

Method 2: Update checkpoints

If you are far behind in sync, then this guide is for you. Even if you are currently already synced, it’s worth following this guide to be prepared for future resyncs. These new checkpoints contain blocks until January 30, 2021. If you are trying to sync a wallet that was created before the summer of 2016, then unfortunately this will not help you.

How to quickly sync MultiDoge?³

1. Completely close MultiDoge.
2. Download this file: multidoge.checkpoints
3. Copy this file to the MultiDoge data directory. See the path below. Overwrite the existing file. If you have already synced to this step, then you are all set. If not, continue.
4. Launch MultiDoge.
5. From the MultiDoge menu, select Tools, then Reset Blockchain and Transactions.
6. On the tab that appears, click Reset blockchain and transactions (Reset blockchain and transactions).

Congratulations, you just updated your checkpoints! If after step 6 you no longer see your balance, don’t worry. It will appear after the synchronization is completed.

You may need to turn on show hidden files and folders to find them.

Windows:

C:\Users\%username%\AppData\Roaming\MultiDoge

macOS:

/Users/<your_user_name>/Library/Application Support/MultiDoge

Linux:

/home/<your_user_name>/MultiDoge or /home/<your_user_name>/.config/MultiDoge

Method 3: Add peers to the config file if sync gets stuck and takes forever

Synchronization can be speeded up by manually adding connections. All these parameters are set in the main configuration file multidoge.properties⁴

Open your multidoge.properties file. It is located on the following path:

C:\Users\%username%\AppData\Roaming\MultiDoge

See above for paths for other operating systems.

Add peers from this list:

peers=173.255.204.124,107.150.52.74,136.244.101.227,167.172.211.76:22557,2001:19f0:6001:229b:5400:2ff:feeb:1f9e,2607:fb90:ce2d:7847:48ba:3763:6173:435f,45.32.66.136,50.220.121.211:6003,52.204.182.74,64.227.97.247:22557,68.108.211.35,68.195.18.155,73.168.22.226,73.253.117.17,73.61.6.1,76.102.39.163,97.77.231.85:9004,216.108.236.43,35.224.144.175,98.11.225.192,23.239.31.246,64.227.46.205,144.91.77.126,47.186.87.162,159.65.98.117

Stuck on connecting or does not connect to the network

Follow the advice from the creator of Multidoge:

1. After resetting the blockchain, repeatedly opening and closing Multidoge sometimes helps to solve the problem. After each re-opening, sync progresses a bit until it stops again. After 5-6 re-openings, we eventually saw the DOGE we had.

2. Immediately go to Tools -> Export Private Keys -> Do not password encrypt.

3. Then find multidoge.key in C:\Users\%username%\AppData\Roaming\MultiDoge and open it in a text editor. Create a new wallet at Dogechain.info and then use the ‘Import Wallet’ option to paste it into separate keys from the multidoge.key file.

4. Get rid of Multidoge. it has been unsupported since 2017 and hangs. Use alternatives.

Alternatives

• Dogecoin Core
• Exodus
• Trust Wallet