when I try restore Attempt to use null reference

Hello Boghos Bo!

Thank you for finding time to open the thread, and report about the issue. I understand your concern, and will be glad to help.

Unfortunately it's not obvious what product you're using, and in different Acronis versions there can be different caused and solutions for such problem. I've carefully checked our internal database, and found no mention of a known issue that would match your description. Thus this situation requires investigation.

If you're facing this issue with Acronis Recovery for MS Exchange, please gather Exchange logs as mentioned here.

If you're facing this issue with Acronis Recovery for MS SQL, please gather: 

1. Acronis Recovery for MS SQL Server Management Console logs from the machine where it is installed:

   C:\Documents and Settings\All Users\Application Data\Acronis\DatabaseBackup\Logs

2. Acronis Recovery for MS SQL Server Agent logs from the machine where it is installed:

   C:\Documents and Settings\All Users\Application Data\Acronis\FomatikAgent\Logs

3. MS SQL Server native logs from the machine where Acronis Recovery for MS SQL Server Agent is installed:

   C:\Program Files\Microsoft SQL Server\MSSQL\LOG

4. Task Service logs from the machine where Acronis Recovery for MS SQL Server Agent is installed:

   C:\Documents and Settings\All Users\Application Data\Acronis\TasksService\Logs

5. Windows System Information File from the machine where Acronis Recovery for MS SQL Server Agent is installed.
6. Specify where the backup archive is stored (i.e. NAS device, local drive, FTP etc).
7. Check whether a database can be backed up successfully by means of MS SQL native utilities.

After that please contact support directly with the information attached. Keep in mind that should there be any procrastination with the reply, you can always specify us the case number. We will do our best to speed up the process.

Should you need anything else or have any further questions - feel free to contact us at your earliest convenience, we will be happy to help you!

Thank you!

Hello Yana,
I unstalled and installed back same problem , I tryed restore in different forest first attempt worked second attempt same error please take a look the files I sent it.
Regards

I remember once having this same issue. It was caused by Kaspersky Antivirus and when I switched off the AV realtime-protection,
then the restore of the acronis-backup worked.