How update or remove a old GPL version of Qt on Windows?

[darkjam]

I have a old version 5.14 installing before a account was necessary.

When i tried to update or remove, i have this error :
No valid license available in your Qt Account for this host platform.

If I trie to install from scratch : It will failled : Qt is already installed.

Sorry for my english, but it is not my language.

[SGaist]

Hi and welcome to devnet,

Did you use the Maintenance Tool application ?

[darkjam]

Hello, thank you foryour help.

Yes, I am.
After logging, I have this warning : No valid license available in your Qt Account for this host platform.
And I can't click on button "Next"

[darkjam]

@HSC give a soluce here : https://forum.qt.io/topic/111756/maintenance-tool-mandatory-account-and-no-valid-license/10