.well-known/acme-challenge folders

Just spotted this in all my domains on server, the folders are empty

.well-known/acme-challenge directories created

Should I be worried, I have googled and it seems like something to do with SSl certificates

I have deleted them

Nothing to worry about. If you are using a free SSL cert that renews at intervals, like Lets Encrypt, the folder will be probably re-created when it renews.

Thanks niko, it seems bluehost have installed the free certificate, it expires in October :smiley: