Citrix not taking keyboard commands Mac OS X

Citrix not taking keyboard commands Mac OS X.

When on a Citrix server, you type and nothing appears, do the following.
Go to Finder on your Macintosh, by hitting Command + Tab and release at the finder Face,
(You may have to hold down command and hit Tab more than once, releasing at Finder),
then click on your Citrix receiver icon on the dock at the bottom (unless you moved it).
Or hit Command + Tab again and release it on Citrix Receiver.
Once back in Citrix, your keyboard should work.

For a permanent fix (hopefully)

It has been reported on Citrix Forums that updating your Citrix to version 11.9 or higher should fix the issue.
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The Virus Fighter Blog