I have tried to install SP3 and it is failing with the following message in the logs. The server is currently running NPM (SP2 with Hotfix 1) with NCM, APM and NTA.
Executing [ msiexec /quiet /update "C:\<SNIP>\Local Settings\Temp\1\pb2\\InformationService2.0SP2.msp" /L*v InformationServiceSP2.log ]
T h e u p g r a d e p a t c h c a n n o t b e i n s t a l l e d b y t h e W i n d o w s I n s t a l l e r s e r v i c e b e c a u s e t h e p r o g r a m t o b e u p g r a d e d m a y b e m i s s i n g , o r t h e u p g r a d e p a t c h m a y u p d a t e a d i f f e r e n t v e r s i o n o f t h e p r o g r a m . V e r i f y t h a t t h e p r o g r a m t o b e u p g r a d e d e x i s t s o n y o u r c o m p u t e r a n d t h a t y o u h a v e t h e c o r r e c t u p g r a d e p a t c h
TIA