What is error code 0xC0000221?

You need to make sure that the problem is not caused by third party programs. To do this, you need to boot into safe mode and see if it will throw an error. If the error does not appear, then you need to check, remove or update the device drivers. I also recommend remembering what programs you recently installed. It is possible that after installing a recent program you started getting an error, so in this case it should be deleted or reinstalled.

Corrupted and missing system files can produce various error codes, including error code 0xc0000221. Also, bad and bad sectors on the hard drive can produce this error. Therefore, we will be using three tools at the same time in this one solution. Open a command prompt as administrator and enter the commands in order, waiting for the process to finish after each command:

How do I fix error 0xc0000098 in Windows 11?

  1. Press F8 during computer startup (before starting Windows).
  2. Select the operating system you want to repair, click Next.
  3. In the system recovery options, click “Command Prompt”.
  4. Type at the prompt, Bootrec /RebuildBcd, then press Enter.

Run DSIM

In case the error persists, we will use the DSIM tool, which is used to repair the Windows image or modify the Windows installation media, taking care to detect the faulty file and change it to a new one.

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In this case we will start the command prompt again as administrator and write dism / online / cleanup-image / restorehealth and press Enter.

Sign up for the Microsoft Store for Business or Microsoft Store for Education

If you can’t sign in for the Microsoft Store for Business or Microsoft Store for Education, you’ll need Azure Active Directory ( AD) or Office 365 for your organization and you will need to be the Global Admin of your organization.

If your organization already uses Azure AD, you can go ahead and sign up for the Microsoft Store for Business or Microsoft Store for Education. If not, you need to follow this Microsoft documentation.

Possible causes

By analyzing the problem and encountering different symptoms of this error, we have narrowed it down to four culprits that could trigger error code 0xc0000221, as listed below:

  1. Hardware problem created by new RAM or hard drive: There are a couple of reported cases where users have started getting this error after installing a second RAM stick or plugging in a new slave HDD.
  2. Secondary GPU: This issue is sometimes reported on computers that have an SLI or CrossFire setup. As a result, the power supply cannot provide enough power to support all connected devices.
  3. System File Corruption: The error code indicates a system wide issue having to do with file corruption.
  4. Third Party Service Stops Starting: There have been reports where the error was triggered by an unauthorized third party service.

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