To launch it using a different approach to @Batanichek, you can find the executables of each of your browsers, and then specify it in the parameters that you need to point to, for example:
Edit: You can find options and their arguments in the R environment (I used RStudio), e.g. options(browser = )
Step 1: Find where your .exe files are installed for all your browsers, then add the following:
For chrome
options(browser = "C:/Program Files/Google/Chrome/Application/chrome.exe")
For firefox
options(browser = "C:/Program Files/Mozilla Firefox/firefox.exe")
For IE
options(browser = "C:/Program Files/Internet Explorer/iexplore.exe")
Step 2: Launch the application as always
runApp(list(ui = ui, server = server),host="192.168.xx.xx",port=5013, launch.browser = TRUE)
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