i developed some reports and used in data driven subscription to export to excel automatically at a scheduled interval.

my export to excel functionality is working fine and all reports are going to windows shared location.
now actual issue is , my client is not able to down load the file with his program and he faced some problem like i have to fix the issue in ssrs side itself.

AFTER exporting to excel my report contains complete data after report data one column is hiding. i.e 

assume my report contain the data for a,b,c columns.if export the data to excel my report contains a,b,c columns and then e,f,g,h..... i.e here d column is hiding.

it means after completion of report data in excel next column is hiding.

how do i fix it.

thanks in advance