Station Configuration Editor

I cannot delete all the index as shown

I restart my Simatic field pg ,and trying to delete  the same message pop out .

anyone one can advise to what to  do in order to delete everything .

Thank you so much

Hello Software632, 

I think you might have tried below steps : 

1.  May be you can restart PC 

2. Once restart is done , do not launch PCS 7

3. Open Station Configuration  Editor and then try to delete all unused stations