How To Enable Fingerprint And PIN Login On Windows 10 1803

The Windows 10 April Update resulted in dynamic lock devices no longer working for some users. For Windows 10 users connected to a domain, it seems the fingerprint unlock and PIN login has stopped working. When users go to the Settings app to enable fingerprint and PIN login, the options are greyed out. There’s a pretty simple fix for this but it involves editing the Windows registry.

Fingerprint And PIN Login

In order to edit the Windows registry, you need administrative rights. Open the registry by typing regedit in Windows search, or in the run box.

Navigate to the following location. You can paste it in the location bar in the Windows Registry Editor and jump straight to it.


Here, look for a DWORD value named AllowDomainPINLogon. If it’s not there, right-click System and select New>DWORD (32-bit) Value. Name it AllowDomainPINLogon, and set its value to 00000001.

Restart your system and then open the Settings app. Go to the Accounts group of settings. Select the Sign-in Options tab, and the fingerprint and PIN unlock options should be enabled.

This seems like a bug but it was done deliberately. Ideally, adding the DWORD value back to the Windows Registry should resolve the problem. Windows 10 should still remember your PIN and your fingerprints after the update however, that’s not the case for everyone.

If after adding the DWORD value, Windows 10 doesn’t recognize your PIN or saved fingerprints, remove them all and add them again. This is something slightly similar to the dynamic lock problem which had to be resolved by removing the devices used to lock/unlock devices, and then adding them back again. This solution works for users who are connected to a domain. If you’re not connected to a domain but experiencing this same problem, you can try this fix but there are no guarantees that it will work.

If you’re still unable to use a PIN or a fingerprint to unlock, check with your network administrator. There might be additional measures in place to prevent the feature from working. If your hardware ie.. fingerprint scanner is particularly dated, it may be that the new update is not compatible with it. There’s no simple way to tell if the device is compatible or not. You can try checking on the manufacturer’s website or by using an external scanner to see if it works. If it does, the problem is likely with your device. Try rolling back to an older driver for your fingerprint scanner and it might work again. If it doesn’t, you might need to look at getting an external scanner or upgrading your system.

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How To Fix No Sound In Windows 10 April Update

Windows 10 April Update changed the privacy settings for your mic so that apps that previously had access to it no longer did. This was after users had already allowed these apps to access the mic on an older version. The no mic in apps problem was fairly easy to solve but it seems sound is one of the major issues in Windows 10 1803. Users are reporting no sound at all after updating to the Windows 10 April update. Here are a few things you can try to fix no sound in Windows 10 after the April update.

We should mention that these fixes work for most users that have no sound in Windows 10 however, there is still a small number of users who are unable to resolve the problem with these fixes. For them, there isn’t any solution as yet and most are fixing it by rolling back to Windows 10 1709. We’ll update this post if a better, less drastic solution is discovered.

Update Sound Drivers

Update your Realtek audio drivers to the latest version. This has resolved the problem for a good number of users. Ideally, Windows 10 should fetch and install the new drivers itself but if it doesn’t, visit the Realtek website, or your device manufacturer’s website to get the latest drivers.

Check Default Device

Right-click the speaker icon in the System Tray and select Sounds. Go to the Playback tab, and make sure your default device is set. If all the listed devices are disabled, enable them and then set a default device. Repeat these steps for the Recording tab.

Disable Spatial Sound

Right-click the speaker icon in the system tray and you will see a spatial sound option. Make sure it’s set to off. While you’re at it, check the volume mixer to make sure nothing is muted.

Next, open the Settings app and go to the System group of settings. Select the Sound tab and run the troubleshooter for both speakers and the mic. It might find a fix.

Disable High Definition Audio CODEC

Open the Device Manager. You can search for it in Windows Search. In Device Manager, expand the Sound, video, and Game controllers group of devices. Here, look for “IDT High Definition Audio CODEC”.

Right-click it and select Properties from the context menu. Go to the Driver tab, and click the Update Driver button. Select the “Browse my computer for driver software” option, and then select “Let me pick from a list of device drivers on my computer”.

This will populate a list of drivers that you can install. One of the drives on the list will be called “High Definition Audio Device”. Select it, and click next. Select ‘Yes’ in the on-screen warning prompt. That’s about it. Restart your system and your sound problems should be resolved. Your audio might sound a little different but that’s to do with a different driver being used.

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How To Update To Ubuntu 18.04 On Windows 10

Windows 10 has received a fresh feature update. The Windows 10 April update has a lot of new features however it seems the Ubuntu app in the Microsoft Store didn’t get an upgrade. Microsoft has explicitly said that it is still working to bring official support for Ubuntu 18.04 on Windows 10. What this means is that if you install Ubuntu on Windows 10 after updating to Windows 10 1803, you will get Ubuntu 16.04. Officially, the next version isn’t supported yet however, there seems to be nothing stopping you from performing a manual upgrade.

Make sure you’re on the latest version of Windows 10 i.e., 1803 aka the April Update aka the Spring Creators Update. Install Ubuntu from the Microsoft Store and run it. Enter the following command to check what version you’re running and it should be version 16.04.

lsb_release -d

To update to Ubuntu 18.04 on Windows 10, enter the following command, and authenticate the change with your password.

sudo do-release-upgrade -d

The command will force Ubuntu to check if a new version is available, and when it’s detected, it will ask you if you want to proceed with the upgrade.

Accept the upgrade and it will download and install it. You will be asked to intervene twice during the upgrade process. The first time, Ubuntu will ask you if you want to install the latest version of the sshd_config file. You can keep the current version, or you can get the latest one.

Next, a little further during the upgrade process, Ubuntu will ask you if you want to remove obsolete packages. You can choose to remove them, or keep them. When the upgrade finishes, a restart will be required. If Ubuntu is unable to restart your system, go ahead and manually restart it.

Open Ubuntu and run the following command again to make sure the upgrade was successful.

lsb_release -d

The new version does run on Windows 10 however, because there is no official support for it just yet, you might run into problems that can only be resolved by running a supported version of Ubuntu. If that happens, i.e., you exhaust all possible solutions to a problem you experience after upgrading to Ubuntu 18.04, your only recourse is to downgrade to 16.04.

You can uninstall Ubuntu and then install it again from the Microsoft Store. Of course this will reset everything you’ve set up/configured on your current installation.

There’s no ETA on when Microsoft will officially support Ubuntu 18.04 on Windows 10 so if you think you can live with the bugs for a while, you ought to know that you might end up waiting longer than you actually can. There are rumors that the next major Windows 10 update that is expected to arrive in October of this year may support the new version of Ubuntu but that is just a rumor at present.

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How To Fix Missing Battery Time Estimate On Windows 10

If your Windows 10 device has a built-in battery i.e., it’s a laptop or a tablet, you can check how much battery time is left. All you need to do is hover your mouse over the battery icon in the system tray. A tool-tip will tell you how much of your battery is full and how long you can use your device before it shuts down. Sometimes though, as is common with Windows 10, its features tend to disappear and the battery time estimate can go AWOL. If it’s missing on your system, here’s something that might fix it.

To fix the missing battery time estimate, you need to edit the Windows registry and that requires admin rights. If you have a pending Windows 10 update to install, particularly a major feature update, simply installing it might fix the problem. If you only have routine security updates pending, you can try this fix because a security update isn’t going to fix problems in the Windows registry.

Fix Missing Battery Time Estimate

Open the Windows registry by typing regedit in Windows Search, or by typing it in the run box. Navigate to the following location;


You need to look for a few things here. First, look for a value called EnergyEstimationDisabled. If it’s there, you should delete it. If you’re a bit queasy about deleting the value, you can set its value to 0 and not delete it.

Next, look for a DWORD value named EnergyEstimationEnabled. It ought to be there, and its value should be 1. If it isn’t there, right-click the Power key, and select New>DWORD (32-bit) Value. Name it EnergyEstimationEnabled, and set its value to 1. For good measure, restart your device. The battery time estimate ought to appear.

There’s no telling what might cause these values to disappear or appear. If you’ve ever tinkered with the power plans beyond what the built-in UI controls let you then you might have caused it. If you’ve overclocked your CPU, installed third-party apps to manage power output, or have installed a buggy system monitoring app then any one of them might be the cause of it.

Of course, Windows 10 tends to lose essential features as it goes from one build to another. A major update can fix problems with the Windows registry but it can also create new ones and that may have been what caused the battery time estimate to disappear in the first place.

If you have a battery time estimate but the battery slider is missing, there’s a fix for that as well.

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How To Delete The Hibernation File On Windows 10

You can view storage usage by folder for all your drives on Windows 10. There’s a built-in tool that you can use to find what’s taking up the most space on your system. For some folders, such as the temporary files folder, there’s a quick clean up button that will delete files in it. For others, you have to go through File Explorer to delete files. If you’re looking to delete large, unwanted files, you might have noticed that Windows 10 has a fairly large Hibernation File. You can’t directly access it which means you can’t delete the Hibernation File from the File Explorer. Here’s what you need to do to regain that bit of space.

Delete Hibernation File On Windows 10

On older versions of Windows, you could open your C drive, find the hibernation file named hiberfil.sys. On Windows 10, the file seems to have been hidden so that you can find it even with an admin account. Regardless, you can still delete it in much the same way as you could on older versions of Windows.

We should mention that if you often put your system in Hibernation mode, you should not delete this file. You need it to resume your system. If you do not use Hibernation mode, and instead prefer to shut down your system at the end of the day, you can lose the file and your system won’t suffer for it. You will need admin rights to delete the hibernation file.

Open Command Prompt with admin rights, paste the following, and tap Enter.

powercfg -h off

Restart your system for good measure and the hibernation file on Windows 10 will be gone. You can check the Storage tab in the System group of settings inside the Settings app to make sure the size of the hibernation file has been reduced to 0. It’s under System & Reserved.

The above command will delete the hibernation file but it will also disable hibernate mode. That’s the only way to get rid of the file. The hiberfil.sys file doesn’t reduce its size if/when you shut down your system. It maintains that size, or might get bigger but so long as you have hibernate mode enabled on your system, it’s going to be there. We should mention that the file will exist even if you’ve never put your system in hibernate mode.

If you later decide to use hibernate mode, you will need to enable it again. Open Command Prompt with administrative rights, and enter the following command.

powercfg -h on

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