If you just hit a Remote Desktop error 0xC000000D after installing the October Windows 11 update, the problem is not your network or your password. Microsoft has confirmed a known issue in KB5127648 that blocks some non-admin users from connecting when Administrator protection is turned on. There is no permanent fix yet, but IT admins have a temporary workaround.
Here are the facts you need before you touch any settings:
- Error: 0xC000000D, with the message “The token that was passed to the function is invalid.”
- Update: KB5127648, released October 13, 2026, and added to the known-issues list on October 14.
- Affected systems: Windows 11 24H2, 25H2, and 26H2.
- Who hits it: non-admin users connecting to a remote device that has Administrator protection enabled.
- Fix status: none yet. Microsoft says it is working on a future fix, with no date.
That is the whole story in ten seconds. The rest of this post explains what is going on and what you can safely do about it.
What the Remote Desktop error 0xC000000D really means
The error message says a token passed to a Windows function is invalid. In plain terms, Windows could not build the right security credentials for the person trying to sign in remotely, so it refused the connection.
The trigger is Administrator protection, a Windows 11 security feature that limits how long admin rights stay active. It is a good feature, and that is why you do not want to switch it off casually.
According to Windows Report, the problem reportedly began with the September preview update, KB5124010, and carried into the October security update. NeoTeo also reports that Microsoft has not given a fix date.
Who is affected, and who can relax
Most people will never see this error. It needs a specific mix of settings, which the table below breaks down.
| Situation | Likely affected? | What to know |
|---|---|---|
| Non-admin user connecting to a PC with Administrator protection on | Yes | This is the case Microsoft describes. Expect error 0xC000000D. |
| Admin user connecting to the same PC | Not named by Microsoft | The notice only mentions non-admin users. |
| Remote PC without Administrator protection | Not named by Microsoft | The issue is tied to that feature being enabled. |
| Home PC you never connect to remotely | Unlikely | Install the update normally. Nothing to change. |
If you manage PCs for a small office or a client, this is the row that matters. Check which of your remote hosts have Administrator protection on before the Monday-morning tickets arrive.
Quick checks before you blame the update
Plenty of things can break Remote Desktop, so confirm this is the same bug first.
- Confirm the exact code is 0xC000000D and the message mentions an invalid token.
- Check that the failing user is a standard account, not an administrator.
- See whether the remote device installed KB5127648 or the September preview update, KB5124010.
- Check whether Administrator protection is on for that device.
- Test with a second standard account to see if it fails the same way.
If all five match, you are almost certainly looking at the known issue and not a network fault. That saves you from resetting routers and reinstalling clients for nothing.
The temporary workaround for IT admins
Microsoft says IT admins can temporarily turn off Administrator protection on the affected devices. You do this by resetting the User Account Control “Type Of Admin Approval Mode” policy through Microsoft Intune or Group Policy.
A careful way to do it:
- Pick only the remote hosts where non-admin users are failing, not your whole fleet.
- Reset the “Type Of Admin Approval Mode” policy in Intune or Group Policy for those hosts.
- Apply the policy (with Group Policy,
gpupdate /forceon the host works) and have the user retry. - Write down which hosts you changed so you can turn Administrator protection back on once a fix ships.
This lowers security on those machines, so treat it as a short-term patch. Do not uninstall KB5127648 instead. The update also carries important security fixes, which we covered in our KB5127648 guide.
A second known issue: USB audio devices
Windows Report lists another known issue with the same update. Certain USB Audio Class 1.0 devices can show a Code 10 error in Device Manager, with missing audio, dead volume controls, or unavailable sound settings.
If your USB headset or interface is affected, switching it to two-channel mode (where the device allows it) may bring sound back. Microsoft shipped an out-of-band update, KB5129195, that fixed the 8-channel and 3D audio mode problems, but other symptoms remain and a full fix is still pending.
If you are still deciding when to move to the newest release, our walkthrough on getting Windows 11 26H2 covers the options.
Frequently Asked Questions
Why does Remote Desktop say the token is invalid?
Windows fails to create valid credentials for a non-admin user when Administrator protection is on. That is what produces error 0xC000000D after the October update.
Should I uninstall KB5127648 to fix it?
Not for most people. The update includes security fixes, and the workaround lets you keep it installed. Uninstalling trades one problem for a bigger one.
Does the Remote Desktop error 0xC000000D affect Windows 10?
The reports name Windows 11 24H2, 25H2, and 26H2. Microsoft has not listed Windows 10 in this known issue.
When will Microsoft fix it?
Microsoft says it is working on a future fix but has given no date. Watch the Windows release health page and the next cumulative update.
Our take: patch now, loosen settings only where you must
Keep KB5127648 installed. The security fixes matter more than a bug that only hits one setup. If your non-admin users are locked out, relax Administrator protection on those specific hosts, write it down, and put it back when Microsoft ships the fix. Everyone else can ignore this one.
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