Getting private key password for winacme

To copy whole Let'sEncrypt certificates including private keys created by acme can be done quite simple, even though the windows builtin export certificate does not support exporting private keys for those certs.

Just go to the ProgramData folder for winacme and copy the certs from the certificates subdirectory.

Then, run winacme, type L for list certificates and select the number for the certificiate you want to import. In the page that then shows up it lists the private key password. Then just import the certificate on the new computer and enter the corresponding password gotten above.