can't upgrade, password problems
82
How do I reset a lost administrative password?
80899
"no public key available" on apt-get update
77610
how to reset a lost admin password?
24377
Authentication with old password no longer supported, use 4.1 style passwords
4305
How do I fix a "Problem with MergeList" or "status file could not be parsed" error when trying to do an update?
1520
How to install software or upgrade from an old unsupported release?
2805
What can I do if I forgot my Windows password?
92222
Can't reset WordPress password
122693
How can I upgrade Mac OS without the administrator password?
15317
Login screen won't accept my password
86170
Can't login to my user account
40452
How do I delete or fix my Keychain after changing my password?
92467
I deleted the "/etc/passwd" file and cannot log in
130082
How to change root password in ubuntu?
12578
How do I upgrade to a newer version of Ubuntu?
5877
"Failed to fetch" while updating
21795
Apt-get update with an @ in password error