deauthorising defunked computers?


goshawk on horseback
 

hello all,
is there a way to deauthorise defunked or no longer working computers in iTunes?
as at least 3, possibly 4 out of my 5 permitted computers in iTunes are now in some way, either scrapped, no longer working, or defunked in some way or another, so they can't be used to deauthorise themselves.
 
Simon
 
 

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