Ug!!! CommandCenter is killin' me

Okay that's a provocative title.  I own a platinum subscription, but I cant upgrade because of CommandCenter.  That last version of Platinum I was able to install on this computer was 2017.02.  I'm stuck on that version and dont know how to move forward. Every time I try to update Sonar, I get "Setup files are corrupted" error. 

• this is a windows 10 box
• I am using that computer to write this message
• this is the same Sweetwater Sound built rackmount computer I've run on since Pro Audio 9
• I've tried uninstalling and reinstalling CommandCenter
• I've tried setting the reducing the max connections from 3 to 2.
• I've tried moving the CommandCenter download path directory around, even to a different disk
• I've tried deleting and re-dowloading the files via CommandCenter
• I've tried turning off Defender virus protection, both real-time scanning and firewall.
• I just did an internet speed test and the result is 55.0 Mbps download, 10.3 Mbps upload, with a 65 ms latency. There are no other devices streaming or operating.
• I have 300G free space on my system drive, and even more on data drives
• This morning I've tried about 5 times right clicking on "Sonar Platinum" and selecting download. It starts to download but silently quits each time. I do see that the file size for SONAR_Platinum_Setup_23.9.0.31 changes with every attempt. It's never downloading the entire file.
• I have numerous other apps on this computer. I download and upload content bundles all the time. This update problem is specific only to Cakewalk CommandCenter.

I want to jettison CommandCenter.  Whatever error it is having it is not recovering from. So it is 100% blocking my ability to update this computer.  It's not re-trying downloads in the background. It's not attempting to reconnect after an error. I can use CommandCenter from my Windows 7 laptop just fine. So there is something specific to this Windows 10 computer. It stopped working after I updated to 2017.2. But why CommandCenter isn't able to reliably download, I don't know. I don't know how else to debug it.  I did install Band In A Box via the Internet on this computer which was a 4-6 hour download. So again, it's problem specific to CommandCenter only.
 
So here's the question: How do I update Sonar manually? Do I copy the exe's CommandCenter download on my laptop and run them here? Do I copy them into the CommandCenter download folder and somehow tell CommandCenter to just install what's already there?
 
Thank you for any suggestions!!
best,
Tim
 
 
 

Thank you, Scook!

I used to do the manual download and install because I like to keep my DAW offline, but Command Centre works much faster and is usual not a problem.
 
Sounds like your download files have become corrupted somehow. 
 
I would just go into the Command Center download file and delete everything and then try again. 
 
The CC Download folder should be backed up to an external drive first. Most of us do this all the time and to keep the folder on C drive empty. It can be a drive hog especially if your using SSD drive for C. 
 
It is found 
C drive /Program Data/ Cakewalk/Command Center/Downloads