Outlook ERROR error code 0x8004011c

Outlook 2013 on Windows 10 gives "An unknown error occurred, error code 0x8004011c" when attempting an IMAP connection for a DOMAIN user

This is a known issue with the above combination of Windows and Outlook version as of 2015-02-18 (see: Bug 9618).

The following registry key resolves the issue: To work around this problem, set the value of the ProtectionPolicy registry entry to 1 to enable local backup of the MasterKey instead of requiring a RWDC in the following registry subkey:

[HKEY_LOCAL_MACHINE\Software\Microsoft\Cryptography\Protect\Providers\df9d8cd0-1501-11d1-8c7a-00c04fc297eb] 
"ProtectionPolicy"=dword:00000001

The PortectionPolicy entry may need to be created

Outlook 2013 on Windows 8.1 gives error 0x800CCC1A when sending over SMTP port 465

This is a known issue with the above combination of Windows and Outlook version as of 2015-02-18 (see: Bug 8854).

The following client-side workaround has been suggested on the dovecot mailinglist:

Disable TLS1.2 on the Windows 8.1 client, using a registry entry:

 [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\TLS1.2\Client]
 "DisabledByDefault"=dword:00000001
 "Enabled"=dword:00000000

If the registry entry above does not exist on your system, you will have to create it manually.

Whether this is OpenSSL or Microsoft's "fault" is currently not answered.

ORIGINAL: https://wiki.koozali.org/Email#Outlook.2FOutlook_Express_give_error_10060.2F0x800CCC90