Checking the firewall settings

To back up to Acronis Cloud Storage, outbound connections over the ports 443, 44445, and 55556 must be allowed on the machine where an Acronis agent is running.

Windows Firewall allows all outbound connections by default. You need to create new rules only if the connections are blocked by a personal or corporate firewall.

In many cases, it is acceptable to allow connections to any host/IP address. If you want to allow connections only to specific hosts/IP addresses, do the following:

  1. Find the datacenter assigned to your account. To do this, go to your account management webpage and click Recover files from Acronis Cloud. The resulting webpage URL will start with a fragment similar to https://cloud-wr-eu1.acronis.com. Here, characters eu1 are the datacenter abbreviation.
  2. Check if connections to the following hosts via the respective ports are allowed:

    To check the connections, use the telnet command or Acronis Cloud Connection Verification Tool, as described in the Acronis Knowledge Base article https://kb.acronis.com/content/4350.

  3. If any of the above connections are blocked, configure your firewall to allow the connections.