I am unable to install a network printer on a laptop running Windows Vista Home Premium. Error is x643. I have uninstalled and reinstalled NET framework 3.5 SP1 and updates. Printer has successfully installed on a laptop running Windows 7.
1.What is the make and model number of the printer?
2.How are you trying to install the driver?
3.Are you using a CD or downloaded driver to install printer?
I suggest you to try the steps provided in the following Microsoft article and check if it helps.
Error message when you try to install a WSD printer on a Windows Vista-based computer after the first installation
attempt fails: "Operation could not be completed (error 0x00000643)"