Table of contents
Collapse the table of content
Expand the table of content

Can't open Clipboard (Error 521)

office 365 dev account|Last Updated: 6/12/2017
1 Contributor

The Clipboard has already been opened by another application. This error has the following cause and solution:

  • Another application is using the Clipboard and won't release it to your application. Set an error trap for this situation in your code and provide a message box with Retry and Cancel buttons to allow the user to try again after a short pause.
© 2018 Microsoft