You have upgraded to 8.5 RU3 and have one or more Task Servers that have stopped working as expected. When reviewing the Site Server Settings page in the console for those Task Servers, it shows as needing an upgrade and the version is not 8.5.5030. When you check the installed version of the Altiris Client Task Server Agent, it shows the expected version, 8.5.5030.
8.5 RU3
Unknown
select
vc.name,
ts.Version as TaskVersion,
ts.Build as TaskBuild,
ts._ResourceGuid
from Inv_Client_Task_Servers ts
join vcomputer vc on vc.Guid = ts._ResourceGuid
select
vc.name,
ts.Version as TaskVersion,
ts.Build as TaskBuild,
ts._ResourceGuid
from Inv_Client_Task_Servers ts
join vcomputer vc on vc.Guid = ts._ResourceGuid
where ts._ResourceGuid = 'PASTE GUID HERE'
update Inv_Client_Task_Servers
set Version = '8.5', build = '5030'
where _ResourceGuid = 'GUID OF Bad TS'