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How to fix
Error Code C1900107
on Windows

Resolve Error Code C1900107 on Windows 10 or 11 effortlessly with our expert-tested solutions. Get your system running smoothly in minutes!

How to Fix Error Code C1900107?
Quick Summary
Error severity
Medium
Est. time
15 minutes
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What causes How to Fix Error Code C1900107?

  • Lack of free space in Primary drive
  • Lack of free space in System Reserved Partition
  • Damaged Windows 10 file
  • Corrupted Windows 10 upgrade file
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I can't launch Windows 10 upgrade. Each time I try to do that, I receive Error Code C1900107. What's the matter? How should I fix C1900107 error?Error Code C1900107 is also known as Update error because it arises when people are trying to upgrade Windows 7, 8 or 8.1. Of course, that may be a serious problem for Windows lovers because this error will not allow to activate Windows 10 upgrade as long as related problems will not be solved. As stated by Windows experts, there are three reasons why C1900107 error come may appear. These are:

  • Lack of free space in Primary drive. Consequently, Windows 10 and Windows old cannot be placed on your machine;
  • Lack of free space in System Reserved Partition;
  • Damaged Windows 10 file.

In the majority of the cases, C1900107 error emerges due to the damaged or corrupted Windows 10 upgrade file. If the upgrade goes wrong, the user may receive a notification that says:

Windows 10 couldn't be installed
Failed: 1 Update Try again
Error(s) found:

Code C1900107 Windows Update encountered an unknown error

If you have already encountered with this error code, then don't worry but don't ignore it as well. Below you can find a detailed guide explaining how to fix C1900107 error. So, make sure that you read everything carefully and fix it permanently. 

How to Fix C1900107 Error?

We have previously indicated three reasons that may cause C1900107 error. According to the recent studies, it seems that it usually arises either when the user downloads a damaged Windows 10 file or if it gets corrupted on a system due to various reasons.

Thus, the first thing that we have to do is to check the $Windows.~BT folder that may contain damaged files due to which you cannot upgrade Windows 10. However, in order to see the folder with the components inside it, you have to unhide it:

  1. Double-click on “This PC” or “My Computer;”
  2. Click “View” at the top of the window and check the box “Hidden items;”
  3. Go to C:\$Windows.~BT and change the name of the folder ( for example, $Windows.~BT1);
  4. Finally, try to download Windows 10.

After that, Windows 10 upgrade should be successful. If, nevertheless, you keep receiving a notification about error code C1900107, then you can try another solution for it, i.e.

  1. Open C:\Windows\Software Distribution\Download';
  2. Find and delete all files that are located in this folder (NOTE: don't delete the folder itself);
  3. Delete $Windows.~BT folder;
  4. If you will be asked for an administrator permission, click “Yes.”

If after all you are not allowed to upgrade Windows 10, then the last thing that you can try in order to get rid of error code C1900107 is to use [rev id=”RegCure Pro”].

Bottom line

To fix the C1900107 error, check the $Windows.~BT folder for damaged files and ensure hidden items are visible. If issues persist, consider freeing up space on the primary drive and the system reserved partition. If none of these solutions work, further troubleshooting may be necessary.

Frequently asked questions

Error code C1900107 typically indicates that there is not enough space on your device to install updates or upgrades. This can occur when your system is running low on storage, particularly during Windows upgrades.

To fix error code C1900107, you should free up disk space by removing unnecessary files or applications. Additionally, consider using the Disk Cleanup tool to help clear temporary files and system caches.

While not strictly necessary, it's always a good practice to back up your data before making significant changes to your system, such as freeing up space or upgrading Windows 10 or Windows 11.

Did this fix work for you?
Gabriel E. Hall

Written & verified by

Malware Removal Expert
Malware removal Ransomware recovery Browser hijackers Spyware analysis Security tools testing

Gabriel E. Hall is a malware removal expert and cybersecurity researcher with over ten years of hands-on experience analysing threats and writing removal guides. She has documented hundreds of malware families — from browser hijackers and adware to ransomware and rootkits — providing step-by-step cleanup instructions tested against real infections. Gabriel's work combines deep technical analysis with clear, actionable language that readers without a security background can follow. Her guides consistently appear among the most-referenced resources for malware removal on Windows systems.

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