Illustrator problem: UKCO - unknown error

[MaartenB]

Today Illustrator gives many errors: UKCO unknown. It happens with each step which I take. Newest version Mac, 27.8  So I cannot proceed. I saw in earlier posts (february) that this happened as well. Any solutions? Translation: the operation could not be completed due to an unknown error

 

[Nicky Magpie]

Me too - the same thing - CC installed the latest app, maybe its that- I'm currently downloading the version before this one and will see..

[Nicky Magpie]

Ok, its the update - i have reinstalled the older version and the UKCO fault is now gone. But it means I am paying for a service that I cannot use the updates..

[MoimoKlans]

Thank you so much!

[Nicky Magpie]

If you go to your creative cloud and press the three dots on the right of Illustrator you can re-install the previous version ( 27.7) it is working for me now with this. But Adobe need to fix this error in the  27.8 version - adobe - are you going to fix this?

[Sacha Yazoka]

Thanks! Same problem here. This works, for now. 

[deborahi_6]

mine too. Can't use it at all (have tried uninstalling then re-installing - doesn't help). The older version of adobe does work, so using that... and following this thread for any solutions.

[Nicky Magpie]

YES, VERY FRUSTRATING - mine still worked but I had to press the clear error every 2 seconds so a terrible way to work, pressing the clear button every time! I reinstalled illustrator and tried lots of things then saw an unrelated post for another error that recommended installing the old version - so this worked.

[deborahi_6]

ok, so Illustrator versions 26.5.3 and 27.7 both work (but not 27.8)... using MacOS Ventura 13.4.1 .... now seeing that there's an update to 13.5 

Will update my mac and see if Illustrator 27.8 will work

[Nicky Magpie]

good luck, hope that fixes it, im on a PC ( dont judge, haha!) 

[deborahi_6]

hahahahah -  updating my Mac did not fix it 

[Nicky Magpie]

shame, lets hope Adobe fix the bug

[MaartenB]

Yess! I went back to 27.7 and Illustrator works again! Many thanks to Nicola314etcetc. On PC, well... nobody is perfect.

Adobe is very quiet at the moment...

[Nicky Magpie]

so glad you are able to work again! I must change my name from the one adobe gave me, haha!

Adobe - the silence is deafening!

[FranWillett]

I have the same issue today, very frustrating! Illustrator wont even open without this error appearing. Will try reinstalling previous version as suggested here. 

[lynnf51055493]

I am having the same issue - it's VERY frustrating!  Adobe - are you fixing this?

[RaymondGroenink]

I had the same problem yesterday. I installed the previous version and than updated it. Seem to work, at least for me 🙂

[jeremyn98819152]

yep - reverting back to the previous version does fix this. Just worked for me. But really not great Adobe!

[Matthew A]

Agreed, I have this issue too, terrible update from Adobe, they have bricked the entire package!

[rogerinlondon]

Tried to downgrade and I seem to have lost my customised workspaces.....

[FranWillett]

This happened to me too! So frustrating having to re-set everything. 

[rogerinlondon]

In particular since I have Astute Graphics installed as well!

[rogerinlondon]

You would have thought that the workspace file could at least have been moved to the Trash....

[FranWillett]

Yes so annoying!! Also just realised all my actions have been deleted too..argh. 

[Monika Gause]

---

@FranWillett  schrieb:

Yes so annoying!! Also just realised all my actions have been deleted too..argh. 

---

Always save your actions from the Actions panel.