In some case you can receve this error “Unable to setup Default Printer, error message: 0X00000709” on windows 7 when you try to set a printer as a default printer.

One of the reason, you can have this error, is a permission problem on a registry key.

Registry Disclaimer: Important this section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base: 322756 How to back up and restore the registry in Windows:(

This is the key: HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\Windows Open Regedit and navigate to the key.
Once you are on the key, on the left panel of the regedit, right click on the key “Windows”, then click on Permission.
If the problem is here you should find the permission in Read Only.
Now you can set the permission correct for the key, usually is full controll for your account.
Once done, close the regedit and you should be able to set the default printer.
That’s all!
I hope this will be usefull for you!
I’ve spent quite a time to figure it out![/vc_column_text][/vc_column][/vc_row]