G
Guest
Signature updates didn't initially work on my PC for three reasons:
1. EFS encryption of the Documents_and_Settings \ CURRENT_USERNAME \
Local_Settings \ Temp folder causes installation to fail (encryption is
sometimes done to laptops in case of theft, though this is not a Microsoft
default).
Workaround: Unencrypt just the Temp folder (unencrypting subfolders is
unnecessary) before updating signatures, then re-mark the Temp folder for
encryption.
2. The check for updates within the Windows Defender application didn't work.
Workaround: Use Windows Update (open Internet Explorer, Choose the Tools
menu, click on Windows Update, and install).
3. The current version of the update was downloaded before doing the above
workarounds, so the system won't update until Microsoft releases the next
signature version.
Workaround: See Microsoft KB915105, basically run the following command:
Msiexec /x {A5CC2A09-E9D3-49EC-923D-03874BBD4C2C} to uninstall the previous
signature version, then do #2 (possible reboot in between?).
Thanks to the group for #2 and #3. Hope this helps others.
Chris Covington
1. EFS encryption of the Documents_and_Settings \ CURRENT_USERNAME \
Local_Settings \ Temp folder causes installation to fail (encryption is
sometimes done to laptops in case of theft, though this is not a Microsoft
default).
Workaround: Unencrypt just the Temp folder (unencrypting subfolders is
unnecessary) before updating signatures, then re-mark the Temp folder for
encryption.
2. The check for updates within the Windows Defender application didn't work.
Workaround: Use Windows Update (open Internet Explorer, Choose the Tools
menu, click on Windows Update, and install).
3. The current version of the update was downloaded before doing the above
workarounds, so the system won't update until Microsoft releases the next
signature version.
Workaround: See Microsoft KB915105, basically run the following command:
Msiexec /x {A5CC2A09-E9D3-49EC-923D-03874BBD4C2C} to uninstall the previous
signature version, then do #2 (possible reboot in between?).
Thanks to the group for #2 and #3. Hope this helps others.
Chris Covington