SSRS 2012 problem with excel export

Question

Hello
I updated SSRS 2005 up to SSRS 2012. When I exported report in excel (xlsx)  I got following warning :
"We found a problem with some conent in 'filnename.xlsx'.Do you want to try to recover as much as we can? if you trust the source of this workbook,click yes"
After Pressing Yes Button
"REpaired Recors: Cell information from .xl.worksheets.sheet1.xml port"
15
0.00000000000000000000 this is in string format instead decimal
2
0.00000000000000000000
This heppens if i have decimal(38.20) variable in table and record value is 0.
To avoid this problem i must change report and use this expression
=IIF(Fields!SomeValue.Value = 0, 0, Fields! SomeValue.Value)
for value in report, but this is not sulution for me because we have more then hundred reports.
Is any other solution?

Answer 1

Hi LashaGurgenidze,
The issue seems to be related to the Excel 2010 or the Excel 2007-2010 rendering extension in SSRS 2012. If possible, I suggest that you keep the Office 2010 and the SQL Server 2012 up to date, and check the issue again.
In order to solve the issue, we can enable the Excel 2003 rendering extension in SSRS 2012, and use this render when exporting to Excel. We can modify the EXCEL render extension in the rsreportserver.config file as follows:
<Extension Name="EXCEL" Type="Microsoft.ReportingServices.Rendering.ExcelRenderer.ExcelRenderer,Microsoft.ReportingServices.ExcelRendering"/>
Then, the Excel 2003 render extension will be available in the Export drop-down list.
By default, the file is located in: C:\Program Files\Microsoft SQL Server\MSRS11.MSSQLSERVER\Reporting Services\ReportServer. Before we modify it please backup the rsreportserver.config file.
Regards,
Alisa Tang
Alisa Tang
TechNet Community Support