The fix that worked for me was to install Avast (free version) and then uninstall Avast. Windows Defender update errors stopped. Why?
Definition Update for Windows Defender - KB2267602 (Definition 1.213.5087.0) - Error 0x80070643
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(128, 8%, 22%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EA%3C/text%3E%3C/svg%3E)
Anonymous
For weeks now keep getting the message:
"Definition Update for Windows Defender - KB2267602 (Definition 1.213.5087.0) - Error 0x80070643"
While the computer seems to run ok, in the mean time I cannot update windows 10...
Windows for home | Windows 10 | Security and privacy
Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.
51 answers
Sort by: Oldest
-
Anonymous
2017-04-07T12:14:05+00:00