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Operation could not be completed error 0x0000074 port is unknown unable to install printers when installing Windows Print App | https://support.wepanow.com
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Fix: How to Fix "Operation Could Not Be Completed (Error 0x00000771)" Error When Using Shared Printer
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c# - The operation could not be completed. invalid pointer - Visual Studio 2015 Update 3 - Stack Overflow
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Operation could not be completed (error 0x00000709) Double check the printer name and make sure that the printer is connected to the network | Prabuzzz Tech Tips
Operation could not be completed (error 0x00000709) when trying to connect to a Network Printer. Windows 8.1 - Ian Carnaghan
Operation could not be completed (error 0x0000003f) Your file waiting to be printed was deleted; Driver corruption
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