Recently we had an antivirus installed on our Sharepoint service and it seemed that Excel services stopped showing graphs. The event log shows that the excel services error started after the installation.
Now I am getting the error "Unable to create or access workbook cache at C:\Windows\TEMP\Excel Server\FileCache\d9ea9965-e4cf-4fce-a6c5-f18aad0e3905\Ranges. Excel Services Application is unable to function without a workbook cache.
I have checked that the service account has correct permissions to write to this folder and after I delete the Excel Server folder in the temp file and run iisreset the charts and graphs will show up again. Then....shortly there after they will stop :(
I am at a loss to figure out what is going on and why the service starts up and then stops. Any help is appreciated.