Issue: When you download a report by clicking on Download report link in Rule detail or clicking on link provided in email alert, the file doesn't open and Excel gives "File is corrupt and cannot be opened" error.
Reason: Excel is restricting you from opening files that are downloaded from internet. This restriction is not just for DvSum but would also impact you when files are sent by your colleagues or you download them from another site.
Resolution: Change the settings in Excel Options
Step 1: Open Excel --> Click on File --> Options
Step 2: Click on Trust Center on left menu
Step 3: Click on Trust Center Settings
Step 4: Click on Protected View
Step 5: Uncheck the first check-box
Step 6: Close Excel
From now on your files will be opened
If you do not want to or cannot change your Trust Center settings, you can manually unblock the excel file and open it.
Step 1: Navigate to the folder (e.g. Downloads) where the report is downloaded
Step 2: Right click on the excel file and click on Properties
Step3: Click on Unblock at the bottom of the dialog
Step4: Close dialog
Now this file can be opened in Excel.