>>>>>I have not any problem with opening my url in default browser, my problem is that when i want to open some url in separate window , only one of them ( and it is last url ) opened. i think it is because of i put this command in scan loop.
>>>>
>>>>If I understand correctly, that is exactly the problem we had, when opening more than one HTML file. The second one replaced the first, instead of opening in a separate window.
>>>
>>>EXACTLY
>>
>>So, as I was saying: I noticed that this problem happens only if Internet Explorer is the default browser. It does NOT happen with Opera, nor with FireFox.
>>
>>Since Opera and FireFox are better browsers than Internet Explorer anyway, I recommend to use one of those.
>>
>>The user can have more than one browser installed on the computer, and use them, but FireFox (or Opera) should be specified as the default browser.
>
>But i can not say to my user that use from specific browser.

I understand. Of course, you can still RECOMMEND that the user sets FireFox or Opera as the default browser.

Otherwise, I am not sure how to solve that problem.

Perhaps you have to detect what is the default browser (I don't know how), and then use different commands, depending on whether the default browser is Internet Explorer, or not.