0x8DDD0004

I think I probably spent about 3 hours trying to fix this issue. When I go to the microsoft update website, it always returns the "0x8DDD0004" error. I tried a lot of differetn solutions until I found the following one.

Be honest, I don't know what is going on underneath, but it turns out the only fixing solution for me.

Windows update doesn't work on my computer until I found the following solution.

corrupted keys.

Import registry key.
=====================
1. Click Start, Click Run, type in "notepad C:\fix.reg" (without quotation
marks) and press Enter. Choose Yes when you are prompted.
2. Copy the following commands and then paste them into the opened Notepad
window.

Windows Registry Editor Version 5.00
[HKEY_CLASSES_ROOT\CLSID\{0000031A-0000-0000-C000-000000000046}]
@="ClassMoniker"

[HKEY_CLASSES_ROOT\CLSID\{0000031A-0000-0000-C000-000000000046}\InprocServer32]
@="ole32.dll"

[HKEY_CLASSES_ROOT\CLSID\{0000031A-0000-0000-C000-000000000046}\ProgID]
@="clsid"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\CLSID]
@="{0000031A-0000-0000-C000-000000000046}"

3. After you paste the above commands, please close the Notepad window.
Choose Yes when you are prompted to save the file.
4. Click Start and Click Run, type in "C:\fix.reg" (without quotation marks)
and press Enter to run the commands we have pasted.
5. A dialog box will pop-up saying "Are you sure you want to add the
information in C:\fix.reg to the registry?". Click Yes on this dialog box
6. Reboot the machine.
7. After the machine reboots use Windows Update and see if the problem has
gone away.