Using ePO 4.0 (Patch 6 Build 1333). Server recently upgraded from ePO 3.6x
After I create a client task for a On-Demand Scan for VS 8.7, when it returns to the list of tasks for the current group, under the Action options the choices are "view" and "delete" and both of them are grayed out. It will not let me edit or delete the task. Creating the same task for 8.5 works fine, and I have the option to edit or delete the task. I am able to edit and delete the policies for 8.7 just fine. I am using the global 'admin' account.
I came accross a similar issue just recently. The problem in my case was that in the ePO 4.0 database in the table "dbo.EPOSOFTWARE" one entry for the product code VIRUSCAN8700 (indicating VSE 8.7) was wrong.
In the example below you can see that here the values for PlatformsSupported and ExtensionsInstalled for the entry with the language "040c" are wrong.
In your case it might be a different entry that is causing the same problem. You will need to identify which entry is wrong and then you can use the SQL script below to correct the entries. If the language various please replace the last entry in the command '040c' with the according details.
UPDATE [dbo].[EPOSoftware] SET PlatformsSupported = 'WNTW:4:0:4|WNTS|W2KW|W2KS|WXPHE|WXPW|WXPS|WVST|WVSTS|WNT7W', ExtensionInstalled = 1 WHERE ProductCode = 'VIRUSCAN8700' AND Language = '040c'