11-04-2020 02:37 PM - edited 11-04-2020 02:39 PM
I am having this same problem and nothing seems to fix it. I can no longer scan from the printer or from the computer. The printer no longer finds my PC and my PC can't find the scanner. I can print just fine, just not scan. I have tried the network utility tool and that does not fix the issue either - it says everything is fine.
I am using windows 10. I am connected via wireless LAN. I tried to connect wireless DIRECT but it will not recognize the password.
Canon - what is the solution here? What happened that this was working fine and suddenly it's not???
11-22-2020 02:50 PM
I've been using the IJ Scan Utility Lite for years with the same laptop on the same wifi network, and it has worked consistently for scanning. Printing over wifi has worked consistently as well. Suddenly, a couple of weeks ago, my mac can't find the printer almost every time I try to print something. I have to turn off and restart the printer, and then it works. At the same time, the IJ Scan Utility completely stopped being able to connect to the printer, and I can't get that to work at all. Any idea why this would suddenly change after literally years of consistently being fine? I didn't change any settings, that I know of. My Mac is on version Catalina, 10.15.7.
12-02-2020 02:14 PM
Please try these steps:
1. Click on the Apple in the upper left hand corner and then System Preferences.
2. Click on Printers & Scanners.
3. Click on the TR8520 on the left side and then [-] at the bottom to remove it. Repeat until all TR8520's are gone.
4. On your TR8520, please select the gear icon at the bottom of the display of the printer.
5. Select Settings.
6. Select Device settings.
7. Select LAN settings.
8. Select Common settings.
9. Select TCP/IP settings.
10. Select IPv6 and then Yes.
11. Select Enable/disable IPv6 and select Disable.
12. Press the Home icon in the upper left corner.
13. Turn your PIXMA TR8520 off.
14. Disconnect the power cord to your router. Wait 5 seconds and then reconnect the power cord.
15. When the router is back online, please turn your PIXMA TR8520 on.
16. In the Printer's window on your Mac, click the [+] at the bottom and then click on Add printer or scanner.
17. In the Add window, click 1 time on the TR8500 that appears.
18. At the bottom, next to "Use", select Airprint from the drop down box.
19. Click Add.
20. The printer will set up. Once it is, please click on it 1 time on the left side.
21. On the right side, click Scan and then Open Scanner.
22. When Image Capture opens, please attempt to scan.
If you are able to scan with Image Capture, please open the IJ Scan Utility and attempt to scan with that application.
12-02-2020 02:26 PM
I have resolved the problem with my printer (and some other devices on my home LAN). My Xfinity wifi modem was set to enable its hotspot. When I disabled that, everything on my network came alive, and every device could see the other devices it was supposed to see. My Mac can now print to and scan from my Pixma TR8520. Also, my Chromecast devices, which I could not see on the network for the last month or so, can now be seen and work as they should. So I would suggest that you check your modem settings. Even if you thought you had disabled your wifi hotspot in the past, as I did, check it anyway. I think Comcast pushed an update that re-enabled the hotspot.
12-05-2020 05:50 PM
This worked! I had seen something about the ip6 before, but I probably tried to access it in "Wireless LAN settings" rather than "Common Settings".
Actually, when I tried IJ Scan Utility I got the error: The operation couldn’t be completed. (jp.co.canon.ij.scanutilitylite.icadriver error 4294967249.) which was only because I had first started a scan through the System preferences -> printers & scaners -> open scanner, THEN I tried IJ Scan Utility. Once I closed out the first scan attempt (which also worked), IJ Scan Utility did work (but a better error message would have been nice).
Anyway, thank you, I can't believe after months this is finally solved.
01-25-2021 04:35 PM
09-29-2021 09:14 PM
That is crazy. So we have to go back and forth from printer to computer to scan if we have a MAC???
Computer is downstairs. Printer is upstairs. So i have to up and down instead of just having the printer scan to the computer. had i known this i would not have bough this dumb printer. wow.
10-06-2021 12:14 AM
Hi. Yeah, I'm still having this problem. Is there ANY other way to deal with this? If I don't get this dealt with, I'm just going to buy a different brand printer. No matter what I try I get an IJ Scan utility message that says:
Cannot communicate with scanner. Possible reasons:
- Scanner is turned off.
- (If using wired LAN connection) It is disconnected from wired LAN.
- (If using Wi-Fi connection) Signal strength is poor due to obstructions.
- (If using USB connection) USB cable is disconnected.
Please check and try again.
The printer says it has 73% signal strength. It (and the modem/router) is in the same place where it always is. It has worked for 2yrs and suddenly, no communication. I tried as much of your list as I could. All of the IPv6 stuff. But the printer doesn't show up on the list of available devices when I + printer. My Mac *will* automatically use the TR8520 to print a doc when I **File > Print** and automatically adds the printer to the list in the printer & scanner preferences when it does. So, I can't click on it in the "devices to add" list in order to see the "Use" dropdown box you described in step 18. Pleeeeeeeease. Get me out of this nightmare.