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Hello,
I have a problem authorising any admin tasks on Yosemite 10.10.5 (like installing new apps, unlocking system settings etc.). I have an admin account with a password, yet the system won't authorise it. The prompt just shakes around as if the password was incorrect. However, I'm able to log into my account without problems, so I assume the login details are fine.
I've noticed that the "Username" field is blank by default (while usualy it's already there when the prompt appears) – please see the attached image file. Even if I type the username manually, it still wouldn't work.
Not sure what to do about it, I've never seen anything like this. Any help would be much appreciated!
Best Answer
Navigate to Macintosh HD->Users and see what your username folder is, and use that when prompted.
Sometimes the username and name you see aren't always the same. As an example, I have profiles named Christian (Work) and Christian (Personal). The actual usernames are christian and christianpersonal, respectively. When prompted for an admin, I have to use christian to gain access. This is because I have changed the profile name after it was first created, giving it a different viewing name than the user folder.