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‎01-16-2023 09:30 AM

HP Recommended
Product: HP DeskJet 3639 All-in-One Printer

My HP desk jet 3639 won't connect to WIFI.  I get an error message: 'this printer can only connect to a 2.4 GHz Wifi network. Your computer is currently connected to a 5GHZ wifi network'. This is strange, as it did work yesterday. The printer had had issues before, I had then exchanged the cartridges, and the printer worked fine for an evening, when it stopped in the middle of a print job. I have researched all trouble shooting pages, followed all advice, and can't seem to get anywhere. 

Also, when I want to download the driver, the HP easy start app can't be opened because 'Apple cannot check it for malicious software. This software needs to be updated. Contact the developer for more information'. 

There seems to be no free HP support, so I hope the community can help! Many thanks! Eva

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