Windows 10: Can't get windows update to work again after registry restoration 0x80070003

To start off, my issue is probably very complicated and likely unsolvable without doing a windows reset/reinstallation.I'm addressing to some windows experts who could be able to pinpoint what i'm trying to solve.I really messed up with registry recently basically replaced all the hives under HKLM with the ones of another machine which doesn't run W10 which resulted by BSOD on endless bootloop, hopefully I was able to restore everything thanks to some software which makes regular registry backups which replaced all corrupted hives by "safe" ones SYSTEM/SOFTWARE/DEFAULT/SECURITY/SAM/DRIVERS/

:)

 

Error 0x80070003

Hi Nilton,

I suggest you to follow the steps given in the link below and check if it helps you. Select Windows 8.1 from the Product list.

Windows Update error "0x80070002" or "0x80070003"

Fix Windows Update errors - Microsoft Support

Let us know the status of the issue.

 

How to restore registry values?

Hello,

Thank you for posting your query on Microsoft Community.

You can perform system restore and check if it helps:

Perform System restore.

I suggest you to perform system restore and select a date prior to the changes which was done with the registry values and check if the issue gets fixed.

To perform System restore:

• Press Windows key + X, select
  System.
• In the left pane, click on System Protection.
• Select the option to system restore
  > next. It will show all restore points already created.
• Select the date prior to the date on which you have made the registry changes.

Registry disclaimer

To do so: Important this section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these
steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article
in the Microsoft Knowledge Base:

322756 (How to back up and restore the registry in Windows - Microsoft Support )

How to back up and restore the registry in Windows



Try the above step and let us know the status of the issue. We will be glad to assist you further.

Thank you.

 

0x80070003

Hi,

In order to help you effectively, kindly provide us additional information.

• Is there a specific file where you getting the error?
• Have you tried any troubleshooting steps prior to the issue?

Error code 0x80070003, occurs when some files in the Windows Update are missing even though the update is downloaded and extracted successfully. In the meantime, you can run the

Windows Update Troubleshooter.

If the issue persists, you can refer to this link
for some troubleshooting steps.

Regards.