I think i remove the server and reinstall a new one. Which one you recomment you?You know, we need Magento 2 and some Joomla Pages on one Server.
The current one available in the Azure Marketplace should work properly. Maybe instead of installing multiple Magento applications, you can enable multi-site as mentioned in the next guide
Also, remember that we do not recommend you to install Magento and Joomla on the same server due to the number of resources Magento requires.