Advice Needed

@jetter...………………………………

Open Malwarebytes, go to settings, exclusions.  Type in:  ucarecdn.com
and all will be well again.

stereo5, perfect, many thanks!

jetter...If sereo5's suggestion worked for you then congrats. Since your post deals specifically with access to this Audiogon website, I do not wish to proliferate a discussion from the main topic....audio.However, I have used almost every malware blocking program out there. Malwarebytes is among the worst of all. It's really not as effective as you think and can hamper your ability to use the Internet. These malware blocking programs progressively build their own hidden databases and then flag new ones that are unfamiliar.As long as you are running a good anti virus program (I feel stupid for mentioning that) there are many programs, whether free or paid, that will allow you to do periodic scans for malware, tracking cookies, etc. Spybot comes to mind but there are others.Just like running periodic virus scans, you can run a malware scan. But, having a program like Malwarebytes to constantly monitor your computer only hampers performance and isn't really that effective.OK computers gurus.....talk.

Get an Apple device. 

jrpnde, I could not agree with you more about Malwarebytes slowing down computer speed and being a memory hog, that is a well documented fact.  Truth be told, Malwarebytes has never given me a "riskware" warning before or after the persistent Audiogon messages and I do wonder if there was anything to them. But thanks to the heads up from stereo5 the messages are gone.

I am running the Windows Defender that comes with Windows 10, the free version of Avast, and have a lifetime license to Malwarebytes, from when you could purchase them.  Knock wood, things have been running fine for a while now, other than the previous pesky Audiogon "riskware" warning.