QuickBooks error 102 appears when there is some type of technical issue, maintenance, or data transfer between the website and the bank. Your work is put at risk when such errors occur. Another possible cause for QuickBooks Online Error 102 may be a server issue related to data transfer between the Bank's website and QuickBooks. Users are unable to download transactions from QuickBooks online banking through a bank's site, and other banking functions are impeded. The best cures for QuickBooks online error 102 can be found at the end of this blog post.