We have created a new training video on the use of the Dropbox application in HeinOnline:
Users who access HeinOnline via a proxy server must provide the domain of the proxy to HeinOnline in order for the Dropbox application to function properly; Dropbox also suggests whitelisting all of its verified domains in the proxy's configuration.
Also, please note that we have received reports from EZProxy users that they are unable to use the Dropbox application in HeinOnline. We are working with OCLC on this problem, but because the problem appears to be specific to EZProxy, we suggest that customers also contact OCLC directly in order to open a ticket to troubleshoot this issue.
Lastly, please note that your organization can disable the Dropbox application in HeinOnline if Dropbox is blocked by the organization's security settings. Please contact us at firstname.lastname@example.org to disable the Dropbox application.