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Error code 800B0100

Error code
0x800B0100
Type
Description
Invalid Signature

Comments

EventID.Net
As per T774033, when recorded in relation to Microsoft Antimalware software, this error code indicates that one or more of the scanning engine update files were not signed. Update the scanning engine by using Windows Defender.

EventID.Net
As per QM974971, this is a bug in Windows Vista. A hotfix (post SP1) is available.

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