Since you cannot download the service as a standalone file, you must repair or trigger it using built-in Windows tools. Depending on your error code, follow these steps.
If the TrustedInstaller.exe file is missing from %WinDir%\servicing , Windows can automatically repair it. All you need to know about Windows Modules Installer Worker windows modules installer service download
| Error Code | Meaning | Fix (No download needed) | | :--- | :--- | :--- | | | Permission denied | Run Windows Update Troubleshooter (Settings > Troubleshoot). | | 0x800f0805 | Corrupt CBS Manifest | Run sfc /scannow in Admin Command Prompt. | | 0x80246007 | Update storage is full | Run Disk Cleanup as Admin and delete Temporary files. | | Service missing | Deleted by malware | Run System Restore or "Reset this PC" (Keep my files). | Since you cannot download the service as a
When a user reports that the Windows Modules Installer is "stuck downloading," the actual problem is usually one of the following: All you need to know about Windows Modules
Because this service is part of the operating system, there is no legitimate standalone “Windows Modules Installer Service download” available on the internet. Microsoft distributes this service exclusively via Windows Update. Downloading an executable from a random website claiming to fix this service is a fast track to installing malware or ransomware.