Creative Cloud error code 1004 (update) and signed out from Illustrator (can't log back in properly)

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Hello. 
I have been using Adobe Illustrator and Photoshop (but mainly Illustrator) for a while now on my computer. It had been a few months since my last sign-in, and when I went to use Illustrator I got signed out and said I was starting my free trial even though I already had an account which I'd used previously. 
I opened Creative Cloud, put in my email and it started updating before giving me the attached error message. 

Any help would be greatly appreciated 🙂

(also wasn't sure what to put as the topic for this, sorry if I've got it wrong)

[Ashutosh_Mishra]

Hi there,

Apologies for the delayed response. You may try using Creative Cloud Cleaner Tool to remove the existing installation of the Creative Cloud desktop app & reinstall once done. Let us know how it goes.

Regards,

Ashutosh