When you attempt to install a feature update, the error 0xc1420121 may appear.
The setupact.log may show the following entries:
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Windows
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Can’t Change HTML Association when MS Edge is the Default App
You may be unable to change the default app for HTML file type in Windows 11. The file type may be associated with Microsoft Edge, and you cannot change the default app to Code Editor, Visual Studio Code, or any other app.Read more
How to Upgrade to Windows 10 22H2 from 2004, 20H2, 21H1, 21H2
If your system runs Windows 10 2004, 20H2, 21H1, or version 21H2, you can upgrade to version 22H2 quickly without reinstallation. You can upgrade to 22H2 using the Enablement Package. You don’t have to install the Feature update/Windows Setup, and no ISO or Media Creation Tool is needed.Read more
How to Downgrade Windows 10 or 11 Pro to Home Edition
If you’re wondering how to downgrade Windows 10 or 11 Professional to Windows 10/11 Home Edition without a clean installation, this article is for you. The trick is to change the Edition ID in the registry and then do a repair installation using the ISO or Media Creation Tool.Read more
[Fix] Temporary Files and Folders Pop Up at Logon
When you log in to your computer, several files and folders may open at startup. A few text-based files by the names “StructuredQuery”, “MSI67784”, “cv_bug,” and lastly, “chrome_installer” may open.Read more
Feature Update Error 0x80242016 in Windows 10/11
When you use Windows Update to install a Feature update for Windows 10 or 11, the error code 0x80242016 may appear.
The error code 0x80242016 (“WU_E_UH_POSTREBOOTUNEXPECTEDSTATE”) means “The state of the update after its post-reboot operation has completed is unexpected.”Read more
Installation Assistant or Upgrade Assistant stuck at 99%
If the progress of Windows 11 Installation Assistant or Windows 10 Upgrade Assistant is stuck at 99% for more than four hours, here’s something you can try.Read more
Windows 11 ISO Download Blocked: Unable to complete your request
When you attempt to download the Windows ISO, mainly the Windows 11 ISO, from the official Microsoft ISO download page, the following error occurs, and your download is blocked.Read more
0x80070003 – 0x20008 – Windows 10/11 Feature Update Error
When you attempt to install a Feature Update, the error code 0x80070003 – 0x20008 may appear.
The Setupact.log file may show the following contents:Read more
Windows 11 Installation Assistant Error 0xc00000f0
When you try to upgrade to Windows 11 using Windows 11 Installation Assistant, the error code error code 0xc00000f0 may appear at 79%. Or the setup gets stuck at Step 3 of 3: 99% during installation for more than 6 hours.Read more
