Change directory where MySQL saves its data
Stopping the Acquia Dev server and moving/copying the files form the original data directory to the new data directory appeared to address the issue - thanks to cilefen for help

The following lines were updated to reflect the new location of the data directory

[mysqld]
pid-file="&lt;&lt;new path&gt;&gt;/data/mysql.pid"
log-error="&lt;&lt;new path&gt;&gt;/data/mysql.err"


and

#Path to the database root
datadir="C:/Program Files (x86)/DevDesktop/mysql/data"