Update to what? Update from what?
Please state the exact complete unedited word-for-word error message
Mac or Windows? What version?
Which old version of LR do you current have?
What is in the error log?
I have a brand new Mac
this is from the error log
Adobe Illustrator CS5 15.0.2 Update
There was an error downloading this update. Please quit and try again later. Error Code: U43M1D207
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