61205: Acronis True Image 2018: Backup to Acronis Cloud fails with "Failed to connect to"

use Google Translate


1. Backup to Acronis Cloud fails.

2. When you click on X to check the error details, the following message is displayed:

The last backup has failed

Failed to connect to


Failed to connect to


Acronis servers are blocked in "hosts" configuration file in Windows. is a special "loopback address" which represents the address of the current computer. If "hosts" configuration file was modified, Acronis True Image will try to establish connection to this addess instead of Acronis Cloud servers


1. Make sure that Acronis servers are not blocked in the "hosts" configuration file

2. If hosts file did not have any lines with "acronis" or if modifying the hosts file did not resolve the issue, verify that there are no blocking rules for Acronis in your firewall software.

Follow the steps below to check Windows Firewall settings. If you have a third-party firewall running, consult its documentation on how to remove a block rule.

3. Verify the connection to Acronis servers

Follow https://kb.acronis.com/content/47145 to check the connection to Acronis servers.

If the checking tool displays any text in red color, it means the access to Acronis servers is still blocked in your environment. See what address and/or port are marked with red and make sure that other software, your router and Internet service provider are not blocking them.

If the verification tool does not produce any red-colored messages, proceed to the next step below.

Further troubleshooting

If the issue persists, collect the following diagnostic information and contact Acronis Customer Central: