# Close MultiCharts and all of its processes (see the list of all processes [http://www.multicharts.com/trading-software/index.php/MultiCharts_Processes here]);
# Backup 32 bit database files (see [[How to Backup User Data]]);
# Convert your database from 32 bit to 64 bit. Please see the [[How to Reduce Database SizeGBak_Utility|GBak Utility]] article for detailed instructions;
# Copy the converted database folder.
# Click Windows Start button (on the computer with MC 64 bit);