KB5006670 for Windows 10 is having quite a few issues, some unconfirmed

Martin Brinkmann
Oct 20, 2021
Updated • Oct 20, 2021
Windows 10

Microsoft released KB5006670 for the company's Windows 10 operating system last week. The update was released for the three latest versions of Windows 10, versions 21H1, 20H2, and 20H1. Users and administrators who installed the update on machines may have run into several issues, some of which are listed on the official support page on Microsoft's website.

KB5006670 is a cumulative update for Windows 10 that patches security issues on systems it is installed on. It is an important security update, but the installation may cause issues on devices that it is installed on. Many issues affect printing on devices the update was installed on.

kb5006670 printing issues

Microsoft lists just one known issue on the support page: installation of printers using Internet Printing Protocol may not complete successfully. When you double-check the Windows 10 Release Health site, you will notice that additional issues are listed, some of which affect printing.

Here is the list of known issues related to printing.

  • Custom printing properties might not be correctly provided to print server clients
  • Installation of printers might fail when attempted over some network connections
  • Installation of printers via Internet Printing Protocol (IPP) might not succeed
  • Receiving a prompt for administrative credentials every time you attempt to print

Most issues look as if they may not affect Home devices running Windows 10 much. Users are reporting however that network printing is not working correctly, and that they receive errors such as "0x00000709" or "Element not found".

The issues appear to be related to Microsoft's ongoing attempts to deal with printing related vulnerabilities that are commonly known as PrintNightmare. The issues are exploited actively and common solutions, such as uninstalling the KB5006670, will make the system vulnerable again to these attacks.

Bleeping Computer has published a number of suggestions that administrators may follow to resolve the issue.

It is unclear when a patch will be released by Microsoft that addresses the issues that users experience currently. Microsoft has not even acknowledged the network printing issue.

Printing issues are not the only issues that Microsoft confirmed officially for KB5006670.

The release health page lists the following additional known issues:

  • Smartcard authentication might fail when attempting to connect using Remote Desktop
  • Apps might fail to open, close unexpectedly or become unresponsive

Most issues are listed as resolved by Microsoft. Still, printing is still bugged for some users of the latest version of Windows 10, and likely also other versions of Windows 10.

Now You: did you run into printing issues lately?

KB5006670 for Windows 10 is having quite a few issues, some unconfirmed
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KB5006670 for Windows 10 is having quite a few issues, some unconfirmed
The update KB5006670 for Windows 10 is causing network printing issues on some of the devices it is installed on.
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  1. Bill T said on November 30, 2021 at 10:08 pm

    How do you know the updates are from M$?

    You don’t.

    It is so completely compromised trying to sort out Sunburst that no one knows who is wagging the dog.

    How do you know?

    How do you know it is Microsoft updating your machine? You don’t………

  2. Anonymous said on November 8, 2021 at 8:06 pm

    Check out the windows update catalog, for your version, as update KB5006670 has been replaced with KB5006738


  3. Alice said on November 8, 2021 at 2:58 pm

    this update has affected my keyboard and my capital key stays on until i restart my computer and when I shut off my capital key lock and go to shift to unlock the key now I only get capitals after the first letter of any sentence. I will uninstall and I will shut down microsoft updates permanently. With as many problems as I have had with windows 10, I am in no hurry for windows 11.

  4. Dan Stiegen said on October 23, 2021 at 11:59 pm

    Yes, update KB5006670 broke network printing on my home setup. Uninstalling that update fixed the problem.

    Symptoms: After the update, my main Windows 10 x64 Pro machine suddenly could not actually print, though it could still see the printer. All documents in the queue to that printer showed “Error” but no further details. To complicate matters, after I removed that printer from Devices, I couldn’t reinstall it. Only after hours of work did I remember the Windows updates I’d installed a few days before, and found internet reports of this problem.

  5. Sebas said on October 21, 2021 at 7:47 pm

    MS, it ‘s like the Dutch IRS: we can’t make it easy for you just more difficult.

  6. common sense computing said on October 21, 2021 at 7:02 pm

    Windows 10, in perpetual beta since 2013.

  7. Danko said on October 21, 2021 at 4:40 pm

    My computer can’t even install it, starting new downloads and installing of it every boot but always fails to install.

  8. Starboykb said on October 21, 2021 at 2:39 am

    Experience network issue in shared printer from USB devices in Windows 10. It works one day, after I notice they update the next day and suddenly the whole dept users unable to print from shared printer. First error, I found the drivers missing. I reinstall the drivers again and then starts to prompting error like the above article. The users PC no longer can add the printer even I disconnect or restart the user PC.

    The only way I solved this is add Local Port and pointing directly to the network printer name. This is just my temporary method because I notice the network printing is slower.

  9. James said on October 21, 2021 at 2:38 am

    Yeh i have major problems, this error is rebooting my machine constantly

    My Windows is a clean install of 2 days ago from Microsoft of a USB Drive

    It is asking to upgrade drivers for my PCI Device & SM Bus controller, i try to upgrade the drivers then it finds KB5006670

    Downloads this file then tries to install it

    2021-10 Cumulative Update for Windows 10 Version 21H1 for x64-based Systems (KB5006670)

    says installing gets to 100% then fails, and comes back with an error code (0x8007000d) and retry

    Does anyone have an answer?? my system just rebooted 4 times by itself

  10. Jojo said on October 20, 2021 at 11:39 pm

    I {thought] I installed an MS Patch last week:

    2021-10 Cumulative Update for .NET Framework 3.5 and 4.8 for Windows 10 Version 2004 for x64 (KB5005539)

    It generated a blue screen and I had to reboot three times until I was able to recover.

    I just looked at updates and the patch is still there. Unsure if I am going to run this again until I make sure I have completed full partition backups prior.

  11. Anonymous said on October 20, 2021 at 10:33 pm

    They need to open-source Windows. Everyone at MS seems to be unskilled.

  12. grub said on October 20, 2021 at 9:43 pm

    > Speaking of, search for canon printers/scanners failing to scan documents if they run out of ink for the latest drama in this industry – a fucking scam, what this industry is.

    Thanks for referencing this. I posted about it here as a suggestion to make an article about it but nothing ever happened.

  13. Yuliya said on October 20, 2021 at 9:22 pm

    Printing and everything related to it is a big scam and nothing more. Thankfully I have no need of it be it personally or work related. I have completely disabled print spooler on all my machines, it’s nothing but a waste of resources to me and I advice anyone who doesn’t own a printer to do so – it’s a service which activel starts, potentially exploitable, and at best just impacting your machine’s startup and memory use for absolutely no reason.

    Speaking of, search for canon printers/scanners failing to scan documents if they run out of ink for the latest drama in this industry – a fucking scam, what this industry is.

    If I were microsoft I’d just remove it altogether from Windows, make it an on-demand package downloadable via WU once Windows detects a printer has been connected, and be done with it.

    1. boris said on October 21, 2021 at 12:46 am

      Can not agree with you more on home printers. It is a scam. If you need occasional printing, go to you local UPS store and bring your flash drive with files to be printed. You will save a bundle.

      I would not disable print function altogether as sometimes you want to print into the file instead of printer itself. And print into file works often better than save function.

      1. Reno said on October 21, 2021 at 2:29 am

        That’s easy to say if you have store close by. But what if you need to drive 100 miles to the closest town?

      2. John G. said on October 21, 2021 at 11:54 am

        The best idea is to buy a laser printer, it’s the best way to avoid problems for a very long time. I still have the same toner since 2018 with more than 2000 pages printed. I am waiting for its end with some expectation, I wonder how many more pages it would print. Best investment I have made ever. :]

      3. Bill T said on November 30, 2021 at 9:45 pm

        I had enough. Two home machines without wifi or any networking after the November joke updates. Updates as a service and demolish networking. This problem doesn’t seem to be emerging yet, I guess a lotta lotta home users are simply… screwed. I’m not going into the issues but permissions are completely adrift complete reinstalls continue the problem. It cannot be recovered. Windows killed itself. It was always going to happen after the .net compromises.

        If you wish to halt the print nightmare then shut down Port 19 – kill it and disable all flavours of .net. All of it. Of course that breaks all the Mickey Mouse apps it runs and pronting, and the mountain of high risk exploits being patched each month.

        10 to 11 is happening because the OS was so completely compromised that no one is ever going to know.

        So there is a complete tun of kit across the range tablets to latest wizzbang super servers that will never run 11 and are ducks waiting for the orange.

        This was the lasttime Windows f***’s me over with its service from hell and I havenow convinced UK CS to ditch it entirely.

        Before the blah blah ha ha, I sold IBM AT’s in the early 80’s and sort this rubbish out standing on my head. But why… Guess what’s replacing Windows…….

      4. dmacleo said on October 21, 2021 at 10:48 pm

        yup bought a Brother MFC-L8850CDW Printer ew years ago and never looked back.

  14. emarell said on October 20, 2021 at 8:22 pm

    I have been mystified by some programms flashing on & off while I use them. The Window drops down , nowhere to be found; then a secong later the same window pops back up from the bottom of the screen. It’ll happen once or twice, then calm down & I can proceed. It only began to occur a week or so ago.

    By reading this article I begab to suspect it’s this Update KB5006670. I tried to uninstall it, according to this webpage’s instructions:

    5 Ways to Manually Uninstall Windows 10 Updates

    I used each of the first 2 methods, but the promised “Uninsatll” button across the top of a list of updates was never seen. Nor did the update in question have any context menu at all.

    Next, method 3: I opted for PowerShell within those instructions. Result? An error popup which said:

    “Security Update for Microsoft Windows (KB5006670) is
    required by your computer and cannot be uninstalled.”

    I wouldn’t bother with the other two methods after that. Guess I will have to wait for Microsoft to acknowledge & repair whatever is going on here. Or… any suggestions? Might there be some freeware that can force that uninstall?

    1. Alan Darcy said on October 21, 2021 at 4:07 pm

      Try going back to the latest System Restore Point, before the update was applied.

      [We have a PC that was flashing alternately between the desktop (whoever was logged-in), and a black screen with a constant heavy CPU load – which resulted in it being unusable following the Oct 2021 MS patch. Still doing this even if left for an hour or two.
      We couldn’t do anything much from the Desktop (Task Manager and Control Panel), could eventually be coaxed into operation, but that was all.
      Tried Safe Mode next – as usual – it proved completely useless – still showing the symptom in this mode with or without networking support.
      For Win 10 to get into Safe Mode / Recovery from this situation, you need to get to the Advanced Startup Options Menu – hold the shift key down whilst clicking re-start (old F8 way didn’t work).

      From here select the Troubleshoot option then the Advanced option.
      Personally I wouldn’t bother wasting my time with safe-mode, instead go straight for System Restore – but that’s up to you. …
      Choose the most recent restore point it offers you that happened before the update that caused the issue. and go ahead and let it restore.

      Then wait for Microsoft to get around to fixing the issue. …
      Since they don’t seem to have even acknowledged the screen-flashing issue we experienced – as yet – be prepared for a long wait. …?
      Thankfully – so far – we only seem to have this happen to a single PC]


  15. VioletMoon said on October 20, 2021 at 7:57 pm

    Install 21H2 or install KB006744?

    No problems on the machines in our office.

    So, don’t know . . . .

  16. ddk said on October 20, 2021 at 7:07 pm

    “ did you run into printing issues lately?”

    Not on Linux Mint or MacOS Monterey beta.
    Windows 10 computer is in mothballs currently but while using did indeed run into various printing issues.

    I’ve pretty much gone full Unix nowadays.

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