Grant the account all the needed permissions:

1. Open the shortcut menu of the data vault and select Properties.

2. Go to the Security tab, in the Group or user names section, select SYSTEM and click Edit to set permissions.

3. Set permissions to read, write and modify files, then click Apply. 

If you cannot unlock the data vault which is located in the root folder of the system disk (for example, C:\):

1. Copy it to another folder, e.g. Documents.
2. Connect the relocated Data vault to Kaspersky Total Security 2018 by clicking I already have a data vault.

3. Open the data vault you have added.

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4. Enter the password and click Open data vault in Windows explorer.

If the instructions in this article did not help, submit a request to Kaspersky technical support by choosing the topic of your request.

• Please provide a detailed description of the issue.
• Attach screenshots of the error to your request, if possible. How to take a screenshot  
• Create a GetsystemInfo tool report and attach it to your request.