Why does the printer suddenly not recognise the computer

why does the printer suddenly not recognise the computer

salkenward
Welcome to the HP Community Forum.
This issue is frequently caused by a driver malfunction although the problem could be just about anything.
You didn't provide any information.
The good news:  You can still help yourself and there is lots of help available, including -- in many cases -- the printer software for your computer so you can reinstall and be on your way again.
Install Full Feature Software – Printer
Take a look at the helpful videos if you need help with the installation.
Take a look, too, at the Troubleshooting / How-to / Solve a problem sections for more help on just about everything "printer".
There is a new "Print Doctor" in town for many printer models.  If there is a new print Doctor program for your model, it will be in your printer software webpages under Utilities or Diagnostics.
Click the Kudos Thumbs-Up to show you appreciate the help and time from our Experts.
Although I strive to reflect HP's best practices, I do not work for HP. 
Click Accept as Solution when the Answer is a good Fix or Workaround!
Kind Regards,
Dragon-Fur

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