Yep

https://en.wikipedia.org/wiki/United_States_v._Microsoft_Corp.

A number of videotapes were submitted as evidence by Microsoft during the trial, including one that demonstrated that removing Internet Explorer from Microsoft Windows caused slowdowns and malfunctions in Windows. In the videotaped demonstration of what then-Microsoft vice president Jim Allchin stated to be a seamless segment filmed on one PC, the government noticed that some icons mysteriously disappeared and reappeared on the PC’s desktop, suggesting that the effects might have been falsified.[13] Allchin admitted that the blame for the tape problems lay with some of his staff. “They ended up filming it—grabbing the wrong screen shot”, he said of the incident. Later, Allchin re-ran the demonstration and provided a new videotape, but in so doing Microsoft dropped the claim that Windows is slowed down when IE is removed. Mark Murray, a Microsoft spokesperson, berated the government attorneys for “nitpicking on issues like video production”.[14]

Microsoft later submitted a second inaccurate videotape into evidence. The issue was how easy or difficult it was for America Online users to download and install Netscape Navigator onto a Windows PC. Microsoft’s videotape showed the process as being quick and easy, resulting in the Netscape icon appearing on the user’s desktop. The government produced its own videotape of the same process, revealing that Microsoft’s videotape had conveniently removed a long and complex part of the procedure and that the Netscape icon was not placed on the desktop, requiring a user to search for it. Brad Chase, a Microsoft vice president, verified the government’s tape and conceded that Microsoft’s own tape was falsified.[15]