contentACCESS MailApp installation issue
Important: The MailApp manifest XML file is sent directly to the Exchange server during the installation of the MailApp. If uploading the manifest fails for any reason, the manifest URL is sent to the Exchange server as a fallback. In this case, the Exchange server must have access to the manifest file on the contentACCESS server, and the following error can occur if access is not granted.
PROBLEM
Error message "The app couldn't be downloaded." during contentACCESS MailApp installation (Provisioning job run).
SOLUTION
This problem occurs when the Exchange server can’t download the contentACCESS MailApp’s .xml manifest file from the contentACCESS server. To successfully install the contentACCESS MailApp, the Exchange server must have access to the contentACCESS server and to the contentACCESS MailApp’s .xml manifest file. The manifest file can be accessed using the following links:
- https://[SERVERNAME]/contentACCESSWS/Mailapp/Mailapp.xml
- https://[SERVERNAME]/contentACCESSWS/Mailapp/Mailapp_no_ribbon_button.xml
The administrator should be able to browse the file using the links above without any issues.