My users are in Citrix environment. Recently we started seeing an error when double clicking on Excel files where there is a space in the file name. Message box 1 has the first piece of the file name followed by "....xlsx cannot be found. Check your spelling or try a different path." Message box 2 has the second piece of the file name followed by "...check the spelling...Make sure that the file has not been renamed, moved or deleted." After clicking to remove each message that includes a piece of the file name, the document opens behind the application window. Odd. If there are no spaces in in the file name, double clicking on the file works without error. Any ideas on how to solve?