Hello,
after updating to version 11.0.3 i can’t find the calendar app.
I have no posibillity to show non officials apps.
Can you help me to aktivate the calendar app?
Thank you for your help.
snoover
Calendar app can be found in “Organization” category.
Calendar is an official app, not an non official one, same as contacts. 
Hello Riff,
thank you for your answer.
But I have only 2 categories: activated and non activated.
Nothing else is shown.
Is your Nextcloud a fresh install or an upgrade from an previous owncloud-install?
Is an Update from 11.0.2.
Copy the files, and update the database in the frontend of nextcloud.
Hello riff,
i have seen that the apps like calendar and contacts are not in the archive of nextcloud-11.0.3.tar.bz2.
i have copied from my backup the apps in the app folder, and it works.
thank you for your help.
best regards
snoover
How did you apply the update? Did you push it from GUI?
I performt the update from the browser.
I have seen that in the install files nextcloud-11.0.3.tar.bz2 the apps like calendar and contacts are not in the archive.
i put it manual in the app folder and it works.
Thank you for your help.
snoover