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Matt Knutson 22Matt Knutson 22 

Error when clicking three different visualforce buttons, "You have sent us an Illegal URL or an improperly formatted request"

User gets, "You have sent us an Illegal URL or an improperly formatted request." error when clicking on three different visualforce buttons.  When I log in as the users all three buttons work as expected.  Why would the user get those errors, but I do not?  The user deleted cookies, cache and restarted yesterday when it first occured.  That fixed the error.  Coming back in today the error is occuring again.  Thanks for any ideas.  
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Alba RivasAlba Rivas
Which kind of button are they, URL buttons? Check the documentation (https://help.salesforce.com/articleView?id=custom_links_constructing.htm&r=https%3A%2F%2Fwww.google.es%2F&type=0) to see if they are correctly implemented. If you give me more information I can try to help :)

Regards