How to fix this event viewer warning ?

For the past couple of weeks I've been getting the following warning in the event log.

Certificate for local system with Thumbprint 7f 0f dc b9 50 ca 47 af ce e7 ba 72 e0 c7 24 da c4 10 ac f8 is about to expire or already expired.

I've had a good look around the web but so far haven't been able to find out what actual certificate this warning is referring to.
Any ideas anyone ?

mta3006 said:

Does this look like any help? I don't know a certificate from ….

http://www.goatmale.com/2016/10/powe...rtificate.html

…. a goat.

Thanks for the reply, I had a good read of the page but it didn't really help.

Neemobeer said:

If it's just a warning you should be able to safely ignore it, but if you want to remove.

You can use powershell to remove it. Open an elevated powershell prompt.

$Thumbprint = "7f 0f dc b9 50 ca 47 af ce e7 ba 72 e0 c7 24 da c4 10 ac f8"
$Thumbprint = $Thumbprint.Replace(' ','') <--- these are all single quotes
Get-ChildItem -Path Cert:\LocalMachine\ -Recurse | ? {$_.Thumbprint -like $Thumbprint } | Remove-Item

You could replace the last part in the last line | Remove-Item with | FL * if you want to just see which cert it is

Thanks I'll give that a try tomorrow.

Run this command in Powershell. dir cert:\LocalMachine\my | Where-Object { $_.HasPrivateKey } | Foreach-Object { write-host $_.thumbprint - $_.subject } It is because you have a dead certificate stored on that machine. Discussed on here previously. Certificate has expired or is about to? - Windows 10 Forums See https://www.roberthollar.com/Fixes/F...cate%20Warning how to remove the cert. Do not worry about the warning, since it is because of the siteuser having a out of date certificate. It is a safe website. Better information about finding the Cert. How to find the thumbprint/serial number of a certificate? - Powered by Kayako Help Desk Software

bro67 said:

Run this command in Powershell. dir cert:\LocalMachine\my | Where-Object { $_.HasPrivateKey } | Foreach-Object { write-host $_.thumbprint - $_.subject } It is because you have a dead certificate stored on that machine. Discussed on here previously. Certificate has expired or is about to? - Windows 10 Forums See https://www.roberthollar.com/Fixes/F...cate%20Warning how to remove the cert. Do not worry about the warning, since it is because of the siteuser having a out of date certificate. It is a safe website. Better information about finding the Cert. How to find the thumbprint/serial number of a certificate? - Powered by Kayako Help Desk Software

Just read your reply and it sounds useful. However a couple of hours ago I located the cert using MMC. it had expired on the 18th December 2018 so would not let me renew it, I just deleted it.
I'll make note of the Powershell commands you posted for possible future use , Thanks.