I tried to download an app and it said can't download because of an error 923. I went to my Settings and made it to where I had a lot of storage, then I tried to download it, but it said the same thing.
This error has multiple causes and solutions. Most common fix is to remove the Google account by performing a factory reset. Go to Settings > Security > Factory Reset or Settings > Privacy > Factory Reset. This process will wipe the apps and accounts on your phone but it has been reported that also restores functionality to your phone in terms of app downloading.