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Using Backup4all - FAQ 10

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Sep 16, 2021

We strive to keep our articles as accurate as possible. If you notice any inconsistencies or outdated info please let us know.
This section contains answers for frequent questions regarding the registration process of Backup4all.

On this page:

How to repair a backup job

If for some reasons there are differences in backup catalog or a file/folder is missing in destination (it was manually deleted by mistake), you can run a repair backup action from the Backup4all interface toolbar.
During the backup repair, there are several actions performed:
  1. A backup test is made: the backup catalog against the files in destination.
  2. The missing files from destination are deleted from the backup catalog (no file is deleted in destination!)
  3. A new backup is made, to include new and modified files (and also the missing files from destination will be included in the new backup)
A second repair option is available: "Repair catalog only". That will perform only the first 2 steps described above.
The other options for quick repair, means there will be a quick test performed, instead of the normal backup test (at step 1 above).

Why the Mirror backup to cloud destination takes so long?

If you run a Mirror backup to a cloud destination (Google Drive, OneDrive, Box, Dropbox, Google Cloud Storage, S3 Compatible), please note there are several requests made for each file/folder backed up.
For each file, Backup4all is performing the request, waits for the cloud server response and then will upload the file, receive the server confirmation, then will continue with the next file.
If performing too many requests, some servers will probably repond slower.
Running an Incremental backup in such a case will speed up the backup.

How can I move the old backup jobs to the new computer if I no longer have access to the old computer?

In such a case, follow these steps:
  1. Install Backup4all on the new computer.
  2. Open in Backup4all the .bkc catalog files from the backup destination. That will recreate the backup jobs in Backup4all.
  3. You can continue the backups on the new computer.

How can I restore the backup files from my old computer's backup to my new computer?

To restore the backup on a new computer, please follow these steps:
  1. Install Backup4all on the new computer.
  2. Open in Backup4all the .bkc catalog file from the backup destination. That will recreate the backup job in Backup4all.
  3. Press Restore and select a location for restore.
  4. Start the restore process.

How do I quickly restore a specific file from backup?

To quickly restore a file, please follow these steps:
  1. Open Backup4all
  2. In Explore View of Backup4all, browse and select the file you want to restore. At the bottom you will see its versions.
  3. Right click the file version you want to restore and press Restore.

How to enable detailed log files?

To enable detailed logs in Backup4all please follow these steps:
  1. Open Backup4all.
  2. Go to File->Options->Logs and history.
  3. Select "Unlimited size" and "Log detailed information" options.
  4. Press OK.
  5. Run again the backup. The new log will be detailed.

Why mirror backup does not remove from destination the deleted source files?

If you use the Mirror backup type and the deleted source files are not deleted from destination even if the "Remove excluded or deleted files from backup" option is selected in Backup Properties->Type->Mirror, please uncheck the "Smart file scanning mode" option from Backup Properties->Advanced page, then run again the backup.

How to update Backup4all?

The updates of Backup4all are free: from version 8.x to 8.y (example: from Backup4all 8.1 to 8.7)
To update Backup4all, follow these steps:
  1. Open Backup4all
  2. Go to File->Tools->Check for updates
  3. Install thew new version. It will be installed over the current Backup4all installation.

How to upgrade Backup4all?

The upgrades Backup4all are paid: from version 7.x to 8.y (example: from Backup4all 7.1 to 8.7)
To upgade Backup4all, follow these steps:
  1. Go to
  2. Enter your Backup4all key and see the available upgrade options and prices.
  3. After the upgrade, you will get a new key for the new Backup4all version. The old key will be deactivated in 30 days.

How do I stop a freezed backup job?

If the "Stop" button does not work for that backup job, please follow the steps:
  1. Open Task Manager
  2. Kill the "bbackup.exe" processes.
  3. Restart Backup4all interface.

When starting Backup4all it stays a long time on "Refreshing drives information"

Please check the following:
  1. Do you have any backup jobs using a remote destination? If yes, please make sure they can be accessed.
  2. Do you have any disconnected network drives in File Explorer? If yes, please remove them and try again.

How can I remove the 1_C part from the .zip backup name?

The 1C part cannot be removed because we must have an unique identifier for each backup execution of a backup job. The number represents the backup number while the letter represents the drive letter. It is possible you have multiple source drive letters, so the resulting files will be:, etc.

How do I set a custom split size for backups?

To change the split size, please open Backup Properties->Compression page.
In the Split section, select Custom size and set the split size you want.
Then press Save.

How does Backup4all calculates the backup type to be executed when using Smart type?

The algorithm takes in consideration the destination size and follows a specific configuration for selecting the backup type to be performed. The configuration dictates the following:
  • By default, Incremental type is executed.
  • Full backup - if the sizes of last differential and all incremental backups since last full/ differential exceeds 80% of the full backup size.
  • Differential backup - if there isn't a last differential and the size of all incremental backups since last full exceeds 30% of the full size, a differential backup will be executed.
  • Differential backup - if there is a last differential and the size of all incremental backups since last differential exceeds 50% of the last differential size, a new differential will be executed.

How to send email notifications to multiple email addresses?

If you want to send the email notifications to multiple email addresses, please open the Backup Properties->Email page of the backup job.
Under the Emails section, enter the email addresses separated by comma.
Then press Save.

Which port number is used by Backup4all to send data when it performs online backups?

The port number used depends on the destination type.
  • for FTP destination, Backup4all uses port 21
  • for SFTP destination, Backup4all uses port 22
  • for cloud destinations (https), Backup4all uses port 443

How to run a program/action after backup - not elevated?

Please open Backup4all.
In Backup Properties->Advanced page, for the “Run program after backup” use the following command:
"explorer <full path to exe file>"
Replace <full path to exe file> with the actual path.