LeaderSSL Support: offline:
Mo - Fr 9:00 - 18:00 CET time
Customer service Billing:

Monday — Friday:
9:00 - 18:00 CET time

Technical Support:

Monday — Friday:
9:00 - 18:00 CET time

Ordering system/certificate issuance:

24/7

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CSR-Generation for Apache

Step by step instruction for generating CSR-request for your site

CSR-Generation for IIS

Step by step instruction for generating CSR-request for your site

SSL Installation for Apache

Step by step instruction for installation SSL-certificate: Apache + Mod SSL + OpenSSL

Installing SSL for IIS

Step by step instruction for installation SSL-certificate on Microsoft IIS

How to get your CPAC

Step by step instruction for collecting your CPAC

Move To HTTPS

How to move a site to HTTPS. Step-by-step guide.

Hot Topic!

Difference
between DV & OV

Which certificate to choose? Comparing DV and OV

Hot Topic!

Difference
between OV & EV

Which certificate to choose? Comparing OV and EV

Checking CA status

Digicert

check Digicert status
Sectigo

check Sectigo status