how to remove smtp option from exchange cert

I was trying to fix a problem and created another problem. In exchange 2016, I selected the wmsvc cert, and checked SMTP, but now it's greyed out and I can't uncheck it.  How can I stop using SMTP with this cert?

DanNetwork EngineerAsked:
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Muhammad AsifSenior Solutions ArchitectCommented:
You may simply click on the certificate which you want to use ( certificate from public authority) and enable the SMTP service on it. I believe it will simply overwite the configurations and SMTP option from WMSVC would automatically uncheck.
DanNetwork EngineerAuthor Commented:
I tried that, didn’t work.   I already have a cert that I am using, that is already using smtp, so I already tried that, didn’t work.
Todd NelsonSystems EngineerCommented:
Make sure you familiarize yourself with the default certificates in Exchange before you go making changes that could cause issues.  Some won't allow changes either, and that is by design.

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DanNetwork EngineerAuthor Commented:
Thanks Todd, I was just making the change according to an Apple Tech's request, but I should have known better to allow an Apple tech to tell me what to do in windows...... grr.. so there's no way to fix it?
Todd NelsonSystems EngineerCommented:
There is actually nothing to fix. It's default and cannot be changed.
DanNetwork EngineerAuthor Commented:
thanks for the input guys.  Muhammad, thanks for the tip, that didn't work.
DanNetwork EngineerAuthor Commented:
Thanks guys, Muhammad, that didn't work.
DanNetwork EngineerAuthor Commented:
ok, so then when I first looked at the cert, I don't think smtp was checked, so I guess you're saying it won't hurt anything by leaving it the way it is?
Todd NelsonSystems EngineerCommented:
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