We Couldn't Install Windows Technical Preview 0x80070070 - 0x20005 -- What is it?
Some Windows users have been experiencing errors in an attempt to upgrade to Windows 10 OS. This includes the “We Couldn’t Install Windows Technical Preview 0x80070070 – 0x20005” error code. If you’re one of the many users who’ve encountered this error, you might want to check the available space on your device. Error code 0x80070070 – 0x20005 occurs when you do not have the required space to be able to install the upgrade.
Solution
Error Causes
Just like the other alternatives of error code 0x80070070 – 0x20005 such as 0x80070070 – 0x50011, 0x80070070 – 0x50012, and 0x80070070 – 0x60000, We Couldn't Install Windows Technical Preview 0x80070070 - 0x20005 is most likely caused by the following:
- Insufficient disk space in your computer
- Incomplete installation or improper deletion of applications
- The device is infected with virus or malware
Further Information and Manual Repair
In order to upgrade to Windows 10, you need to have at least 40 to 50 GB of free space in your device. Thus, you need to free up some space in order to successfully upgrade your system to Windows 10. See below for the manual methods you can employ to solve your problem.
NOTE: It would be best to seek help from an experienced technician if you are not confident enough to perform the manual methods yourself or you can alternatively make use of an automated tool.
Method One: Clean Up Your Device
- Click Start then browse Afterwards, click on This PC.
- Right-click on Local Disk (C:) then choose
- Under the General tab, click on Disk Cleanup.
- Once the Disk Cleanup window appears, check all items you want to clear down, making sure that the recycle bin is empty and clear any temp files, as well as error logs. Click OK once you’re done.
- Repeating the same process above, clear down your system files as well to ensure that the old OS files from your previous system are taken down by clicking on Clean up system files in the Disk Cleanup window.
Method Two: Uninstall Unused Applications
Sometimes, there are unused applications just lying around your device. This may take up your needed space from your device for a system upgrade. Uninstalling these applications can make space that will eventually elude error code 0x80070070 – 0x20005 along with its alternatives – code 0x80070070 – 0x50011, code 0x80070070 – 0x50012, and code 0x80070070 – 0x60000.
- Open the Control Panel then select Programs and Features.
- Check on unused applications on your device
- Right-click on the unused application then select
Method Three: Remove or Archive Files
If there are tons of images, media, videos, or documents that you rarely use but will still be needing in the future, you can move these files to another drive where Windows 10 will not be installed on.
If there are no secondary drives in your device, consider using a USB Drive or external hard disk. Another option you can do is making use of cloud storage programs like One Drive or Google Drive. In this way, you’ll still have access to these files even if it’s not in a physical location while making larger space in your device.
Method Four: Scan Your Device For Viruses
Most Windows users download applications or software regularly. These applications or software might come from unsafe sites where you might have accidentally downloaded a virus or malware along with the legit application or software you intended to download.
With that said, it is highly recommended to download and install in your device a reliable and powerful antivirus. Using an antivirus, you can now perform an overall scan of your device’s system. Once you’re able to detect and remove any suspected virus or malware, you’ll now be able to get rid of the error code 0x80070070 – 0x20005. After solving the issue, you can now resume upgrading to Windows 10.
Method Five: Download An Automated Tool
Can’t seem to put up with the long and technical manual repair process? You can still fix this error by downloading and installing a powerful automated tool that will surely get the job done in a jiffy!

If you are about to install Windows 10, then during the installation process, your computer boots into the Install and Configure Windows 10 screen with Cortana that assist you during the setup. Once you reach the last page which is “Choose privacy settings for your device”, you will see the Advertising ID of your computer. Under the Advertising ID, you have to disable or toggle off the “Apps can use advertising ID to provide more personalized advertising in accordance with the privacy policy of the app provider” option. After you disable it, click on the Accept button to proceed with the installation. After that, the copy of your Windows 10 you are using will have the Advertising ID disabled by default.
Tracked as CVE-2021-34484, the “zero-day” flaw enables hackers to breach all versions of Windows (including Windows 10, Windows 11, and Windows Server 2022) and take control of your computer.
Microsoft mistakenly thought it had patched the vulnerability (which was first found in August) when it was publicly disclosed in October. But the fix itself was found to be flawed, something the company admitted, and this drew even more attention to the vulnerability. Microsoft subsequently promised to “take appropriate action to keep customers protected” but two weeks later, a new fix has still not arrived.
Luckily the third-party security specialist 0patch has beaten Microsoft to the punch with a ‘micropatch that it has now made available for all Windows users “Micropatches for this vulnerability will be free until Microsoft has issued an official fix," 0patch confirmed.
You will need to register for a 0patch account and install its download agent before the fix can be applied, but with 0patch fast becoming a go-to destination for hot fixes which beat software companies to the punch this is a no brainer. Hopes will be high that Microsoft can release an effective patch sooner rather than later but, until then, all Windows users must act now if they want to be safe.
Download 0patch here:

One of the first things that everyone saw when Microsoft has unveiled Windows 11 is its Start menu. Funny enough this is what has caused most of the divide among users, some find it interesting, and some do not like it. Truth is, it is different, and it is centered in the middle instead of the lower left part of the screen.
It has been confirmed however that the Start menu can be moved to any part of the screen so if you want, you could place it on the lower left as it has always been.
Live tiles do not longer exist in the Start menu, instead, we have styled simple icons.
If you have used the cascade option in previous Windows versions then it is most likely that you will like the new Snap controls.
You can quickly snap windows side by side, or arrange them in sections on your desktop just by hovering over maximize button on the title bar.
File explorer has gone through some visual and design changes, the ribbon on top has been completely removed and replaced with a header-like feature with a slick and clean design.
The header contains a nice organized and designed single row of icons like cut, paste, copy, rename, delete, and new folder icons.
The settings app also has gone through visual and design changes. It has a new design that is very visually appealing and navigation has been simplified and more organized. Finding the right and desired setting is much faster and clearer now.
Yes, widgets are back but not like you remember them.
Instead of being all-time present at your desktop like once they used to be, now there is a button on the taskbar which brings the widget bar up that contains desired widgets. This way they are easily accessible and do not clutter desktops.
So far we have weather, news, calendar, and stocks widget but we will see how development on these goes. I expect to have community-made widgets like in old days for all of our needs.
The new Xbox app is now integrated into Windows 11, offering quick access to Xbox Game Pass games, the social parts of the Xbox network, and the Xbox store.
As widely known by now Windows 11 will require you to have a TPM 2.0 module capable CPU in order to install it.
This system requirement has caused a lot of controversies but essentially it seems that MS's goal is to protect your personal data by using this module.
The upside of course is that your data will be protected much more than in previous Windows versions, the downside, of course, will be that you will need newer hardware to run OS on it.
and that is essentially it, keep on tuned on more Windows 11 information and overall articles tied to PC and technology here at errortools.com 