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  • Solved: Failed to open a connection to the device (-21345) Scannin . . .
    Hi @JoeSkelley Welcome to the HP Support Community I'd be happy to assist you with the "Scan error" issue Let's try a power reset on the printer- Reset the product With the printer turned on, disconnect the power cord from the rear of the printer Unplug the power cord from the wall outlet Wait at least 60 seconds Plug the power cord back into the wall outlet Reconnect the power cord to
  • Failed to Open a Connection to the Device (-21345)
    It sounds like you're dealing with an issue where your OfficeJet 5740 printer works fine, but you're unable to connect to the scanner on macOS Sequoia, and you’re seeing the error: “Failed to Open a Connection to the Device (-21345) ”
  • Scanning error -21345 - HP Support Community - 8580467
    Hi there, I'm unable to scan using wireless When trying to scan using "System Preferences " -> "Printers Scanners" -> Scan I get the error: "Failed to open a connection to the device (-21345)" When opening the folder scan, the printer goes offline Printer is perfectly connected to network an
  • Failed to open a connection to the device (-21345)
    The scanner on my printer suddenly stopped working It's definitely a software issue because my printer is working just fine I finally figured some of the problem out and was able to get HP Easy Scan (which would previously not allow me to open it) to at least scan a document, but the Preview scan
  • Failed to open a connection to the device (-21345)
    Besides the (-21345) error when trying to scan, I get a Filter failed dialog when I try to print Downloading the printer driver software from HP reinstalling does not help
  • Failed to open a connectionto the device (-21345) scanner HP. . . - HP . . .
    The error message you're encountering, "Failed to open a connection to the device (-21345)" on your HP LaserJet MFP M140we scanner, may have several possible causes
  • Fix Epson XP-860 Error 21345 on macOS Sequoia - FAQ - JustAnswer
    Connection failure (21345) on Epson XP-860 after macOS Sequoia update usually stems from driver incompatibility First, uninstall existing Epson drivers and download the latest macOS-compatible drivers from Epson’s official site
  • Failed to open a connection to the device (-21345)
    When I click on "Systems Preferences" and try to scan, I get "Failed to open connection to the device (-21345) I've tried unplugging the power chord, waiting 60 seconds, nothing works From all the related comments, it looks like a major issue coming from HP
  • Troubleshooting Error Code -21345: Failed to Open . . . - JustAnswer
    I'm getting error code -21345 failed to open a connection to my Pixma MG5320 scanner on MacBook Air M2





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