![]() Therefore, we recommend that you replace such files by using the files that comply with the Windows security requirements. Resolutionįiles that have contents that don't comply with Windows Authenticode specifications or files that were changed after the signature was applied can be harmful for your computer. Therefore, you can't create Publisher or Hash rules for such files. AppLocker can't process the Authenticode hash of such files. If a PE file meets either of the two conditions that were mentioned earlier, the Authenticode hash of the file isn't trusted. Additional content was added to the file after the signature was applied.ĪppLocker hash rules for PE files are based on the SHA2 Authenticode hash of the file.This condition applies to some third-party installers. Windows can identify content that doesn't comply with the Authenticode specification in the file.PE files are considered unsigned if one of the following conditions is true: This issue occurs because the Windows Authenticode Signature Verification function now verifies portable executable (PE) files. However, you can't create the rule, and you receive the following error message:Ġx800700C1: not a valid Win32 application Cause This article describes an issue in which you can't create an AppLocker hash rule for a file in Windows.Īpplies to: Windows 10 – all editions, Windows Server 2012 R2 Original KB number: 2749690 SymptomsĪssume that you try to create an AppLocker hash rule for a file on a Windows computer.
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