Answered
How can I reinstall CC after deinstallation due to update error 50?
When troubleshooting CC 2015 Update error 50 Adobe Support made me to deinstall CC 2015 and follow the instructions of Verwenden des CC Cleaner Tools, um Installationsprobleme zu beheben | CC, CS3-CS6. The problem is, I can't find a way how to download and reinstall cc 2015.