We get so many of these, with only minor variations.

My google-fu is failing to find one single canonical QA we could use to close these against.

Can anyone find - or indeed write - one we can use as a comprehensive dupe-hammer?

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Examples, just from today…  
 - https://superuser.com/questions/1823042/ 
 - https://superuser.com/questions/1822954/

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Candidates found so far…  
 - https://superuser.com/questions/53645/  
 - https://superuser.com/questions/247312/
 - https://superuser.com/questions/32372/