Both lookup cells formatted at plain text, I don't think that's the issue. Searching for C186 returns 2 results proving they're correct. please see images.
this is filler text to get around the minimum words vs images requirement this is filler text to get around the minimum words vs images requirement this is filler text to get around the minimum words vs images requirement this is filler text to get around the minimum words vs images requirement this is filler text to get around the minimum words vs images requirement
Use 4th parameter as exact match. Also check manually that the value matches to each other by typing =C186=Sheet2!A80
it should return TRUE
if matches.
I would recommend you to use XLOOKUP()
instead of VLOOKUP()
which is more versatile. Try-
=XLOOKUP(C186,Sheet2!A:A,Sheet2!B:B,"",0)