So, even after doing the above mentioned steps, this same error is coming. Do you have a proxy server enabled? Have you upgraded the KSC? What was the last time it was working fine and started showing errors. You can check service account with with the task is running or can restart it if it’s possible. yes, i use proxy to access internet, and proxy was enable in KSC. no, i dont upgrade the KSC. last month it running well.