Counteractions to remove QuickBooks error OLSU 1013 After its release, QuickBooks has taken over the market like a storm. It is a one-stop solution for many organizations, entrepreneurs, and other users who need reliable accounting for their businesses. Despite its every capability, it is still defenseless against internal errors like any other software. One of those is QuickBooks error OLSU 1013, which appears in the software while the connection with the bank suffers because of any issue. If you also came across this error in your QuickBooks, continue reading the blog to acknowledge the reasons it occurred and the methods to rectify it.