Why do I keep getting an antivvirus error with UE4.21?

Hello, silly or stupid question here. I have just now (before writing this post) installed UE4.21 on my system. Now I keep getting an error from my Anti-Virus software which shows the following and keeps going and going and going with a new number at the end of the file name.

Bitdefender moved a threat to quarantine. File name: C:\Users\bjahn\AppData\Local\UnrealEngine\4.21\Intermediate\AssetRegistryCache\1d5167fa.bin. It is recommended that you run a System Scan to make sure your system is clean.

Any idea what the cause or how to fix this? Do I need to unnstall UE4.21 or my Bitdefender?

Bruce

Update to above question. I am also unable to open Maps in UE4.21 since the editor will close out to desktop. Any other version works fine.