I was working on one of my webportal using my Mozilla firefox 4.0 which invokes the SAP WebDynpro and faced the error that "The browser is not supported with Web Dynpro..." kind of error.

Later I tried the following
1) Just go to the address bar of the mozilla and write the following



2) When the above appears you see a an exception which can be accepted.



3) now the core part,you will see list of parameters on left and values on the right in tabular fashion.

4) Just add a new parameter using right click i.e "general.useragent.override"

5) Appropriate value would be "Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.2.8) Gecko/20100722 Firefox/3.6.8"

Thats it,

Its resolved.