windows - How to delete weird directory `=..`

Running this command 7z.exe e -o=.. example.zip created a directory =...

How can I delete it again?

---

• Windows Explorer can not delete it: "An unexpected error is keeping you from deleting the folder. ... Error 0x80004005: Unspecified error"


• Windows Explorer can not rename it either: "Could not find this item"


• del =.. can not delete it: "Could Not Find =.."


• rename =.. x does not help: "Access is denied."

Any other ideas?