Using the system on port 80 or 8080 works fine but when connecting to port 443 after using a self signed certificate using openSSL we cannot access main functions in the system like maintenance and the dashboard doesnt load 
and our appache conf 
.
Softwares used: tomcat8, java postgreSQL and Appache2 the main configuration for the server is in the appache
Hi @said,
Are you still facing this issue? Were you able to solve it? Thanks for sharing with the community!
May I ask you to review:
Software requirements
Later DHIS2 versions require the following software versions to operate.
- An operating system for which a Java JDK or JRE version 8 or 11 exists. Linux is recommended.
- Java JDK. OpenJDK is recommended.
- For DHIS 2 version 2.35 version and later, JDK 11 is recommended and JDK 8 or later is required.
- For DHIS 2 versions older than 2.35, JDK 8 is required.
- PostgreSQL database version 9.6 or later. A later PostgreSQL version such as version 13 is recommended.
- PostGIS database extension version 2.2 or later.
- Tomcat servlet container version 8.5.50 or later, or other Servlet API 3.1 compliant servlet containers.
- Cluster setup only (optional): Redis data store version 4 or later.
Hello!
@said Were you able to diagnose the issue. Facing the same on one of my instances predominantly with the maintenance app and other apps installed from the App Hub. I saw a couple of errors on the dashboard as well but the main thing is with maintenance
@Gassim After installing a SSL certificate to your registered domain, what else can be done to ensure access to the app or internal redirects are not affected? I’m going through the documentation and I think all is in order for the same. Do you have additional pointers?
System Specifications:
Linux OS - JRE 11
DHIS2 version 2.37.9. and 2.37.8 (recent update was performed where the issue was still present)
Postgres 13. Tomcat 0.