Error when connecting. (Error occurred error: 14094410:lib(20):func(148):reason(1040))

Here is the solution for computers showing this error due to an expired certificate:

As admin, open the command prompt of my computer in LogMeIn Client
1. cd "C:\Program Files (x86)\LogMeIn\x64"
2. cmd
3. logmein.exe cert -createca "LogMeIn CA on %COMPUTERNAME%" -createsc "%COMPUTERNAME%"
4. net stop LogMeIn && net start LogMeIn

(Thank you Michal_orc )

Depending on where the computer is located, you may run into an error "Country too long". 

The problem is that Windows returns a 3-digit "sub-region-code" instead of the 2-character "alpha-2" country code. Check for example: https://github.com/lukes/ISO-3166-Countries-with-Regional-Codes/blob/master/all/all.csv 

To overcome on this problem you have to explicitly specify the 2-digit code of your country. So find the "alpha-2" code of your country in the table above and issue the following command in an administrator command prompt:

"C:\Program Files (x86)\LogMeIn\x64\LogMeIn.exe" cert -createca "Default CA" "<alpha-2 code of your coutry>" -createsc

For example if you are in Mexico, then issue the following command:

"C:\Program Files (x86)\LogMeIn\x64\LogMeIn.exe" cert -createca "Default CA" "MX" -createsc

On Mac the certificates are stored in files:

- /Library/Application Support/LogMeIn/CA.pem

- /Library/Application Support/LogMeIn/server_ex.pem

First these files have to be deleted: 

- sudo rm /Library/Application Support/LogMeIn/CA.pem

- sudo rm /Library/Application Support/LogMeIn/server_ex.pem

Then restart the daemon: 

- sudo launchctl stop com.logmein.logmeinserver