Before this happens, windows asked my with which program I want to open html pages.

Then this happend!

Now how can I press Commit since it is outside the windows setup window?

To setup developers:

Really, a web view control in the setup application? There are 100 of stuff that can go wrong , and they are going...

Hi, 

Would you please let me know why you try to open an HTML file and what this file is and where it located?

Would you please provide more detailed information about what you want to do before this issue happened?

Look forward to your response.

Hi,

Did this issue still persist on your computer?

Based on current information, we can try following steps to check the results:

Reset IE to default settings:

How to reset Internet Explorer settings
http://support.microsoft.com/kb/923737

If the issue persists, please try monitor the process when trying to open HTML file and check which one cause this issue:

Process Monitor v3.05

http://technet.microsoft.com/en-us/sysinternals/bb896645.aspx

How to use, please refer to this article

Using Process Monitor to capture system events

http://www.sophos.com/en-us/support/knowledgebase/119038.aspx

Keep post.