# Blockchain health check
**1. Check the block count from the local wallet:**
Compare it to the one of the blockchain explorer @
**The current block must match.**\
If they don’t match, here’s what to do:
* Check the version of your wallet at Tools > Information and make sure it is the latest one available at .
* Next, close the wallet and delete the following .dat files: **peers.dat**, **banlist.dat**, **mnpayments.dat**.
* If you are using Windows you will find the files in the "%appdata%/FIX" folder.
* If you are using Linux you will find the files in the /YourUserName/.fix folder
* If you are using a Mac, you will find these files in the /Users/YourUserName/Library/Application Support/FIX folder
* Delete the directories **blocks** and **chainstate**.
* Then do a full resync by restarting the wallet.
\- The wallet will find new peer connections. Go to Tools > Peers list and see if you have any peers running with an older version. If you do, right-click on them and choose "Ban Node for 1 year":
**2. Check the blockcount on your masternode wallets on your VPS (remote wallet):**
For those using the Nodemaster script:
*fix-cli -conf=/etc/masternodes/fix\_nX.conf getblockcount*
For the normal script:
*./fix-cli getblockcount*
And compare it to what explorer says. If they match you are good. If they don’t, you’ll need to do a full resync of your MN with the FIX blockchain as follows:
If you are using the Nodemaster script:
A. Delete the blockchain folders called “blocks” and “chainstate”. Located in /var/lib/masternodes/fixX if you are running the nodemaster script (X is the number of your masternode)
B. Delete the .dat files **banlist.dat, mnpayment.dat, peers.dat** located in the same folder.
Then do a full a resync by stopping and starting the fix daemon:
systemctl daemon-reload \
systemctl enable fix\_nX \
systemctl restart fix\_nX
If you are not running the nodemaster script, the files that must be deleted are located in the /YourUserName/.fix folder and the command to stop and restart the fix daemon should be:
./fix-cli stop \
./fixd *or* ./fixd -daemon
**Another way to verify that you are on the right chain is to run:**
“getblockhash \” from the local wallet in debug console and “fix-cli -conf=/etc/masternodes/fix\_nX.conf getblockhash \” from the MN.
Then see if the hash matches with what the FIX explorer says.
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