User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.7.8) Gecko/20050511 Firefox/1.0.4 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.7.8) Gecko/20050511 Firefox/1.0.4 When you open the MS-word or XLS files in the firefox it will take the user to a optional box which will ask you again " open with". The firefox fails to through the incompatibility messages to the user instead of that it is repeatedly asking user to file format for opening. Reproducible: Always Steps to Reproduce: 1.Right click of mouse button on a MS-word or MS-XL file. 2.choose the option open with "firefox". 3.user will be taken to the option window which ask you again want to open with "firefox" again with OK button in disable state until you will click on it. 4.press OK. 5.same option window appears. 6.same process will reapeat until you will press CANCEL or select the other file format. Actual Results: when the user try to open the file with firefox user will be taken to the option window asking again the file format to open with OK button is in disable state for a while.This will take place repeatedly until user clicks on CANCEL or select the other file format. Expected Results: If the Firefox cannot open such files, it should through a incompatibility Messages on the screen such as "abc.xls cannot be opened" or " firefox cannot open files of this format". OS : Windows 2000 Firefox : 1.0.4 Fixing of this Bug may Help in the fixing of the Bug 298817,which tells you about the OK button which will remain Disable when the option window appaears.

The attachment shows you the optional window which will appear on the screen when you open with the firefox,also the OK button which will be in disable state

it will show you the option window which will appear when you open the file with firefox.

*** This bug has been marked as a duplicate of 218257 ***