Hello,
I have Sonar X1 producer and  Komplete 8 installed. When I open up a midi track in any project in sonar and try and insert any VST plug in, it does not work, there is no sound. I tried to insert Kontact 5 into a midi track, and no sound. I inserted a soft synth into the same track, and can here sounds no problem.  I am a novice at all of this and any help would be appreciated. Also can anyone tell me if there is one stop total package of sample loops for sale, compatible with Sonar X1 and containing as many different samples as possible, vocals, stringed instruments, drums, piano etc . Thank you.

Try inserting a softsynth this way.

Open the browser usually on the right side of the track pane. Fins the VSTi plugin you want and double click it. A window opens with numerous options select fort a midi channel and FIRST audio track. Now you can create some midi data by copying a loop into the midi track or play some notes on a connected keyboard and away you go. Make sure that your audio track connects the Master bus which in turn has to connect to your audio device outputs.
Do the tutorials. Sonars reference manual (help file) is over 2000 pages of very useful information.
Open up Sonar and press F1 which opens on the tutorial page. Do the one for using soft synths.

Kontakt 5 is a little more complex as you have to assign an instrument inside and route midi and audio channels inside Kontakt.

In my signature is a weblink to my Onedrive with lots of useful info. There's a doc there titled Sonar and Kontakt 5

Download it and follow the instructions. It's done by one of our forum members bob-bone.

Thank you for the replies. I managed to get Kontakt 5 working. I changed the midi channel to omni and can hear sounds now via my midi strings track. Can anyone advise me where I can get a total package of sample loops, that are compatible with Sonar X1? Thanks.