Last night when I shut down my computer, Windows said it had some updates to install. I figured they were general security fixes. I let windows update my machine. The next day I turned on the computer. After the bootup, Sonar would not come up and I could not reinstall it. As I investigated this problem further I found that Addictive drums needed to be reauthorized. A few other programs that depend on internet authorization needed to be reauthorized as well. After doing these steps I still could not get sonar to run or install on the computer.
 
After a little digging I found that microsoft installed a whole new build on my system and that is why things were not working. All my software appeared to be running on a new system and it did not recognize any previous authorizations. So I had to go back to the older build and just like magic, Sonar started working again.
 
For the record I am still using Sonar Platinum. I like everything Bandlabs is doing, but I have yet to install it on my recording computer because I am in the middle of a huge project that contains 60 songs. After I am done I will upgrade to the bandlab version. I have installed the bandlab's version on my laptop so that I can play with it and see the differences. This only effected Sonar Platinum.
 
I only made this post to serve as a warning. Windows did not tell me I was updating to a new build that would appear as a totally different operating system for all my software. Be very careful about any update Microsoft wants to install unless you have the Bandlab version of Sonar. I am really supprised because in my opinion, it really did not take long for Sonar Platinum to become obsolete.
 
If this happens to you then you need to go back to the older build of windows and then turn off microsoft updates. Shout out to Bandlabs, Thank you for keeping Sonar relevant! 

This happens frequently with Addictive products from what I can gather. A little of a pain to repeatedly re register products you've already paid for. Has happened to me on several occasions. I was using BFD 3 and the last time it happened I didn't bother to re register. 
I haven't had the Cakewalk launch issue though.

Which update number? I had a couple last night, nothing broke.

jamesg1213
Which update number? I had a couple last night, nothing broke.

I don't know the number. All I know was that it updated last night May 9th to the latest update. Sonar and Addictive drums were not the only software apps affected by this. I had issues with other non related programs as well, and I can no longer turn off skype. It continues to run in the background like Cortona. 

This sounds like the Windows 'Spring Update 1803'? Some chaos being reported, eg:
https://www.techradar.com...ears-to-break-some-pcs
Another site is indicating the trouble is caused by the presence of anti-malware programs clashing with the W10 update.
 
1803 hasn't rolled my way (UK) yet, but things don't look good. Like others, I always have to do the re-authorise for XLN Drums when Microsoft makes my PC become a different PC, i.e. every major Windows upgrade, but the failure of Sonar Platinum reported above is scary.

Skyline_UK
This sounds like the Windows 'Spring Update 1803'? Some chaos being reported, eg:
https://www.techradar.com...ears-to-break-some-pcs
Another site is indicating the trouble is caused by the presence of anti-malware programs clashing with the W10 update.
 
1803 hasn't rolled my way (UK) yet, but things don't look good. Like others, I always have to do the re-authorise for XLN Drums when Microsoft makes my PC become a different PC, i.e. every major Windows upgrade, but the failure of Sonar Platinum reported above is scary.

Yes, I checked in the updates section and it is 1803. It completely rendered my version of Sonar Platinum useless. More apps are no longer available. As I look it seems that Microsoft added some video editing program and a few other tweaks, but that is not worth the trade-off. It took a few hours to get everything working again. I went back to build 1709.

I have read of people having problems after updating to 1804, but I updated the other day and have had no issues yet... apart from the XLN activation which I have had after updates in the past.

MS is now calling 1803 (2018 March) 1804 (2018 April)!!!  Any day it'll become known as 1805??

Don't you just love how Microsoft does this stuff?  I particularly like when they change your settings without asking you first, or telling you that they did.
 
Thanks for the heads up, and glad you got sorted out.

Just one more reason I stay on Windows-7.  I (and millions of others) hate W10.  If CWBL is ever released for a *nix OS, I'd give that a try fo sho.
 
Back to topic:  Create a restore point before updating the OS or anything important?  I always *thought* that Windows automagically created a restore point before installing updates.  No?