I am new to Magento & using Magento 2.1.7 in my windows system while running the following command in CMD
php update/cron.php
It is showing an error Update-cron: Please check var/log/update.log for execution summary
& in my log file it is showing this in the log
[2017-07-15 11:10:27] update-cron.ERROR: Cron readiness check failure! Found non-writable paths: C:\xampp\htdocs\magento_test/app/design/adminhtml/Magento [] []
I am not getting that exactly where is the problem with it.