Problem while opening the excel files

Question

Hi
In my system , i have excel reports in my server disk . And i am opening the excel files through an action class like /viewReport.do?id=23 .....and thus from the action class i open my excel file .
After opening one excel file , i try to open another excel by clicking that link , then my system often hangs else excel shows an error saying "a report with name viewReport.do is already open " even though both of these files are different on the server
How can i avoid this ??
The reason why i am opening the excel file through an action class is , i need to perform some operations before opening that excel report
i tried by setting the
response.setHeader("Content-disposition","attachment; filename=myWorksheet.xls");
and i kept on changing the names but that doesnt work
Can any one let me know how to go abt this ??

Answer 1

Hi Sir,
I found you posted the issue in the
APS.NET forum, and you seems use some code to open the file. Have you tried the last link in the thread?
Then, let's do some test to narrow down the issue.
I notice that you are using Office 2010, does the issue occur only with 'Reachlocal.xlsx' or every existed file?
If every Excel file has the issue, please try the following methods:
Open the file in
safe mode.
Repair Office 2010.
On the other hand, this problem might be caused by malware on the affected machine. There are now two known variants of malware which causes this problem: Win32/Crilock.A and
Win32/Buma!rts. They have both been identified as a new family of
ransomware.  
http://blogs.technet.com/b/the_microsoft_excel_support_team_blog/archive/2013/09/07/quot-cannot-open-the-file-because-the-file-format-or-extension-is-invalid-quot-opening-office-files.aspx                                   
If you have any further assistance about code/program, I recommend you post the question to MSDN forum:
http://social.msdn.microsoft.com/Forums/en-US/home?forum=exceldev&filter=alltypes&sort=lastpostdesc
Regards,
George Zhao
TechNet Community Support