<apex:page standardController="Contract" recordSetVar="contracts"  readOnly="true" language="en-US" contentType="application/vnd.ms-excel#test.xls" >
<!---- My Code --->
</apex:page>

This is the code of my visual force page ,And I have added a list view  button on 'Contract' with this page.I click on this button first time after login ,it redirect me to ' /visualforce/recsession'.For second time and after  that it works just fine.
It redirect first time I click on this button after login.
Please let me know if this is a know issue which is not resolved yet,or any solution that can work.
 

<apex:page standardController="Contract" recordSetVar="contracts"  readOnly="true" language="en-US" contentType="application/vnd.ms-excel#test.xls" >
<!---- My Code --->
</apex:page>

This is the code of my visual force page ,And I have added a list view  button on 'Contract' with this page.I click on this button first time after login ,it redirect me to ' /visualforce/recsession'.For second time and after  that it works just fine.
It redirect first time I click on this button after login.
Please let me know if this is a know issue which is not resolved yet,or any solution that can work.