Ok here is my situation. 3 PC's all running Windows 7 Ultimate 1 Desktop connection via wire to router 2 Laptops connected via Wireless (Linksys wrg54g) All 3 PC's are visible on all 3 PC's via the Homegroup in Windows Explorer. I can browse/copy/write files on all 3. All sweet. All 3 can print to the 2 Printers connected to the Desktop. Laptop A is configured to Backup using the Windows 7 Backup to the Desktop. This works fine. Laptop B however when trying to backup to the desktop I get an error message after I have selected the Drive in the setup screen and I've entered my username/password credentials The error code is 0x80070043 I've tried everything and I'm quite experienced. Both laptops for all intents and purposes are identical. Any help would be greatly appreciated.