This error can occur when there are shared network drives on your computer. Even if you are only trying to back-up local files & folders, the back-up software will ask for your credentials, in case it needs them afterwards.
It can also occur when you are logged in with a non-administrator account. The software might try to access files it is not allowed to, and ask for the correct credentials to do so.
If you then click on “OK”, withing specifying a password, the software will say: “No blank passwords accepted.“.
This is because of a policy in Windows, that does not allow blank passwords when you try to log on as a different user, even if that user has no password set.
There are two different options to prevent this. The most simple one is to set a password for your Windows account. You can then enter this password when the back-up software prompts you for this.
To set a Windows password, you can do the following.
- Press the key combination: ctrl + alt + del
- Choose “Change password”
If that does not work, you can try the next method.
- Go to start > Controlpanel > User Accounts
- Click the “Change password”-link
The second method is changing the “blank passwords” restriction that is by default active on Windows. You can change it as follows.
- Click Start, point to Run, type gpedit.msc, and then click OK to start the Group Policy Editor
- Open Computer Configuration > Windows Settings > Security Settings > Local Policies > Security Options
- Doubleclick the item called “Accounts: Limit local account use of blank passwords to console logon only.“
- Double-click Limit local account use of blank passwords to consol logon only.
- Click Disabled, and then click OK
- Quit Group Policy Editor
More information can also be found on the Microsoft Support Pages.
You can now use blank passwords when selecting the folders to be back-upped.