Email Folder Name Greyed Out

I have several subfolders of my Inbox in my Comcast IMAP email account.  One of them is greyed out and is causing synchronization errors when I open my email account from my Windows 10 laptop using OUTLOOK 365.  One of the suggested fixes is to rename the folder using webmail.  Since the folder is greyed-out, I cannot rename it.  Any suggestions on how I should proceed?

Thanks.