Errors & Troubleshooting

Error messages while connecting your server and how to troubleshoot them.

Error codes

Error EP500: Unable to complete task successfully.
"Unable to complete task successfully."

This is generic error message that may appear due to many issues such as:

  • Missing sub folder for source storage in case of sync backups
  • SFTP/SSH connection error with your SFTP storage
  • Failure in copy some corrupted files in sync backups

For more details about this error, you can go to Console tab on your log, or contact support.

 
Error ES900:Your account key is missing, please reconnect your server to SimpleBackups.

Sometimes displayed as:

"your account key is missing, please reconnect your server to SimpleBackups."

It means that SimpleBackups is not connected correctly to this server anymore. To solve the issue, you either need to:

  • Edit your server from SimpleBackups dashboard and re-enter your SSH username, password
  • Or, if you use an SSH key to connect to your servers, you will need to re-run the server connection command displayed on your SimpleBackups server's dashboard
Error ES905: Connection to this server has been invalidated, please reconnect your server to SimpleBackups.

Sometimes displayed as:

"connection to this server has been invalidated, please reconnect your server to SimpleBackups."

It could mean a few things:

  1. SimpleBackups is unable to confirm that this server still belongs to your account
  1. Your have changed your SimpleBackups temporary directory from the dashboard and have not validated the server connection afterwards

To solve the issue, you either need to:

  • Edit your server from SimpleBackups dashboard and re-enter your SSH username, password
  • Or, if you use an SSH key to connect to your servers, you will need to re-run the server connection command displayed on your SimpleBackups servers dashboard.
 
Error ES915: Please reconnect your server to SimpleBackups
"Please reconnect your server to SimpleBackups"

To solve the issue, you either need to:

  • Edit your server from SimpleBackups dashboard and re-enter your SSH username, password
  • Or, if you use an SSH key to connect to your servers, you will need to re-run the server connection command displayed on your SimpleBackups servers dashboard.
 
Error EP88X: Unable to connect to your server to take your backup! Connection timed out.
"Unable to connect to your server to take your backup! Connection timed out."

To solve the issue, you need to:

  • check hostname, port, and firewall rules (make sure you have whitelisted our IPs)
 
Error EP81X: Bad SSH server hostname
"Bad SSH server hostname"

To solve the issue, you need to:

  • check hostname.
 
Error EP82X: Your server is asking for an SSH password. Double check that user can SSH via key authentication without a password into or enter your server's password on SimpleBackups.
"Your server is asking for an SSH password. Double check that user can SSH via key authentication without a password into or enter your server's password on SimpleBackups."

To solve the issue, you need to:

  • make sure SSH user can only use key auth or enter the password on your server’s edit page.
 
Error EP83X: Bad SSH server username or password
"Bad SSH server username or password"

To solve the issue, you need to:

  • double check your SSH user name an password
 
Error ES909 | EU100 | EF100: Another identical backup job is probably already running - skipping this one
"Another identical backup job is probably already running - skipping this one"

You need to wait for the current running job to finish first

 
Error ER100: An error occurred while executing recipe : $RESPONSE
"An error occurred while executing recipe"

There is an issue in your app backup (GitHub, GitLab,...), you need to check $RESPONSE for more details

 
Error EP85X: Your SSH user's password has expired and requires change. Please change it and try again.
"Your SSH user's password has expired and requires change. Please change it and try again."

You need to update your SSH user’s password and try again.

 
Error EP8XX: Unable to connect to your server to take your backup! Authentication failed. Please reconnect your server to SimpleBackups.
"Unable to connect to your server to take your backup! Authentication failed. Please reconnect your server to SimpleBackups."

Connection to your server failed, you can try to revalidate connection from your servers page.

 
Error ES970 | ED970: This incremental backup is currently in an invalid state. We will reset it and take a zero-level.
"This incremental backup is currently in an invalid state. We will reset it and take a zero-level."

Your incremental backup reached invalid state and we have reset it for you.

 
Error EP7XX: Connection interrupted
"Connection interrupted"

The SSH connection interrupted during reading the error output [stderr]

 
Error EB600: Unable to complete task successfully
"Unable to complete task successfully"

Fatal error happened during your backup, try your backup again later.

 

Troubleshooting

I cannot validate my server.

→ Make sure your server allows SimpleBackups to connect to it by whitelisting IP addresses.

 
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Last updated on April 21, 2025