Why are closed questions shown an option to protect?
132091
Do not allow me protect closed questions
28195
Protected question notice is confusing and incorrect, especially to users with the association bonus
1490
How to deal with questions/answers with a security vulnerability?
22937
Shouldn't there be some sort of grace period before questions can be closed?
126149
Notify users of a question they closed being edited or nominated for reopening
88207
Automatically protect questions with three or more low-rep-user deleted answers
61414
Should trending questions be auto-protected?
91673
Why are there some type of questions that are open and highly upvoted, while others of that same type are closed? Can someone explain?
74107
How to appeal a closed question?
86240
Please add the ability to filter [Closed] questions out of my results
117918
Why doesn't the Related question list show that questions are closed?
37008
Show "this question has an active bounty and cannot be closed" earlier, when it applies
79007
Improve "Protected Question" message with regard to rep gained through Association Bonus
13709
Should flagging a question for closure prevent close-voting?
61078
Update privilege page so it doesn't claim I can answer protected questions while I can't
102333
What to do with closed questions with out of date answers?
60332
How can I ask question from specific users about the reason for closing a question?