Hi there David and welcome
First, is this occurring within Apple Mail? Or another mail program such as outlook 2016?
Can you describe the icon you click please?
I can see you are a first time user to the site. What we do here is either a question and answer type of conversation or remote support where I would actually connect to the computer and have a look and attempt to fix the problem for you.
Remote support can save a lot of time if you are not comfortable performing repairs yourself. Sometimes even with instructions you can make a mistake and make things worse.
I will send an offer through for remote support and should you accept I will connect and see what is going on and fix the issue. Otherwise we can continue to talk like this but I will need to ask a number of other questions and try and walk you through some steps.
Both options are 100% guaranteed by the way. Remote is just quicker and avoids the risk of you making a mistake and doing something wrong.
If you want remote click get extra help. If not simply reply to me.
Can you go to www.teamviewer.com
Click on Download in the middle of the page
Download and install the program and give me the ID and Password ***** please so I can connect
Do not close the program but leave it open else I will not be able to connect
on which step?
ok, the site is running fine, can you restart your Mac and try again please David?
ok, go here
Click Download Now on the left, then Installer and it should download from there.
no, you clicked the wrong thing, on my link click installer, on the top left, in Blue, above Host and Quickjoin
it will just start downloading the file...
Not sure why we have these difficulties, but I am going to upload the file for you.
I uploaded it for you
Click on this link
Click Download on the left, and it will start downloading the file
Then run it please
no it does not, I can guarantee you that, it is direct from www.teammviewer.com
What you are seeing is a warning on the site NOT TO upload any viruses or malware, it is a standard terms and conditions, when you read it you see this.
Click the file you download to run it, like running any file on your Mac David.