Password Problem
Trying to uninstall Flash Player on my Mac. I don't remember my password. Help!
Trying to uninstall Flash Player on my Mac. I don't remember my password. Help!
This is macOS prompting you for the password you use to log into your computer. (They want to be really, really sure that you're uninstalling/installing software intentionally.)
Depending on how you have the computer configured, that password might just be nothing at all.
If that doesn't do it, here's the guide on resetting your password:
https://support.apple.com/en-us/HT202860
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Enter your E-mail address. We'll send you an e-mail with instructions to reset your password.