stopped -'filter' failed

I stuck this "solution" as a question so it will be visible as a conversation since MANY people have this problem. Also, I went though numerous fixes such as installing new drivers ("software") and all the good advice given, called Apple, etc. Also, my backups wouldn't work. I'm using Mojave on a iMac Pro, HP Printer, but I don't think these matter.

I must note that I don't particularly know why my printer works now. I will tell you what I did, and now it works. I didn't use these new setting before, when it worked (?).

• turned on the printer
• removed and reinserted the USB cable. (I've done this before too but it didn't help)
• went to System Preferences / Printers and Scanners / Print and did the following:
• - clicked on the printer in the column on the left and Reset the Printer System
• - turned on Share This Printer on the Network
• - in Sharing Preferences:
• - - turned on Printer Sharing, though it does say my firewall is blocking it
• - - turned on Bluetooth, though my printer doesn't use Bluetooth
• - set the Default Printer to the Last Printer Used

I'm sure some of these have no effect, but that's what I did in desperation. The overview is that it seems to be a Preferences problem. Perhaps sharing the printer on the network is the important setting. Even the Printer Utility works! Hope it stays; I'm afraid to reboot. I'll let ya know if something comes up.

Perhaps some smart guy can figure out what's going on ...

I stuck this "solution" as a question so it will be visible as a conversation since MANY people have this problem. Also, I went though numerous fixes such as installing new drivers ("software") and all the good advice given, called Apple, etc. Also, my backups wouldn't work. I'm using Mojave on a iMac Pro, HP Printer, but I don't think these matter.

I must note that I don't particularly know why my printer works now. I will tell you what I did, and now it works. I didn't use these new setting before, when it worked (?).

• turned on the printer
• removed and reinserted the USB cable. (I've done this before too but it didn't help)
• went to System Preferences / Printers and Scanners / Print and did the following:
• - clicked on the printer in the column on the left and Reset the Printer System
• - turned on Share This Printer on the Network
• - in Sharing Preferences:
• - - turned on Printer Sharing, though it does say my firewall is blocking it
• - - turned on Bluetooth, though my printer doesn't use Bluetooth
• - set the Default Printer to the Last Printer Used

I'm sure some of these have no effect, but that's what I did in desperation. The overview is that it seems to be a Preferences problem. Perhaps sharing the printer on the network is the important setting. Even the Printer Utility works! Hope it stays; I'm afraid to reboot. I'll let ya know if something comes up.

Perhaps some smart guy can figure out what's going on ...

I just had today the exact problem. I have an old HP Photosmart D7260. Been working perfectly but no longer works even on 6 month old CCC backups. I also reinstalled the drivers, but no help. I didn't do anything regarding printing...

I did have some sort of malware a week ago and the printer wasn't used until now, when it didn't work.

P.S. I'm using Mojave on an iMac Pro