Windows 11 installed without my permission overnight and erased my business' files

Question

So I put my Windows 10 machine to sleep last night with no intention of upgrading to Windows 11 ever. I use my computer for business and had a lot of irreplaceable files on that machine. I had many backed up, but not all. This has directly hurt my business as I did not ask to be upgraded to windows 11, I did not ask for my files to be wiped, and no user agreement in the world gives Microsoft the right to make unsolicited changes like that to my machine without my consent. You can't write an agreement that says "I can take your child if you install solitaire" and then install it for me automatically for example.

I can't even roll back to windows 10 and get my files back. This is absolutely unacceptable. All the support says is "You should have paid for the upgraded version of One drive and we would have backed up your files for you". Create the problem and sell the solution is not going to cut it with businesses owners. This is measurable damages.

Answer 1

Dear Jeromy p,

Regarding your information, Windows upgrades—whether initiated manually or through Windows Update—are designed to preserve user data and installed applications. During an in-place upgrade from Windows 10 to Windows 11, the system temporarily stores previous files in a folder called Windows.old, which is retained for up to 10 days unless removed earlier by system cleanup tools or storage policies.

If the upgrade was not explicitly initiated and you did not consent to it, we recommend reviewing your Windows Update settings, Group Policy configurations, and device management policies to determine whether automatic updates or servicing tools may have triggered the upgrade.

1. Check for Windows.old Folder
   • Navigate to C:\Windows.old to see if previous user data is still available.
   • If present, you may be able to recover files manually.
2. Use File History or Backup Tools
   • If File History or System Restore was enabled, you may be able to recover files from a restore point.
3. Check OneDrive or Other Cloud Services
   • If OneDrive was active, files may be recoverable via OneDrive online.
4. Use Data Recovery Software
   • If no backups are available, third-party recovery tools may help locate deleted files, though success is not guaranteed.

Microsoft does not initiate upgrades without user consent. However, devices configured for automatic updates may receive upgrade prompts or proceed with installation if unattended. We strongly recommend enabling update notifications, maintaining regular backups, and reviewing device management policies to prevent future disruptions.

For more details, please refer to:

Windows Upgrade File Retention

Recover Lost Files After Upgrade

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Best regards,

Harry Phan