12.04LTS - could not open a connection to your authentication agent
29877
How to fix "Could not open a connection to your authentication agent." error when trying to add ssh-key?
33948
I can't open/ping any antivirus sites
55940
How to bypass the "secure connection failed" warning in Firefox 33
96229
'Failed to login: Invalid ip' when connecting to servers
95733
Unrecognized SSL message, plaintext connection? Exception
60708
How to fix Tomcat WARNING: An attempt was made to authenticate the locked user?
73083
failed to connect to http://changelogs.ubuntu.com/meta-release
75105
Unable to login to a domain computer using a Local Administrator account
38277
Ubuntu - saying your security settings have blocked an application from running with an out-of-date version of java
24665
Unable to log in with your OpenID provider: Message signature was incorrect on Area51 only
6809
How do I fix the GPG error "NO_PUBKEY"?
38383
Global auth is dead! Long live universal login
129797
I got an error when I tried to login to my account
98047
SSH-Key authentication fails
94986
Connection Refused while apt-get update ubuntu 18.04 over proxy
50430
Getting "Authentication is required" when trying to access the Play Store
95910
SSL error, Sec_Error_Unknown_Issuer With Firefox