What is the scheduled task "\Microsoft\Windows\AppID\VerifiedPublisherCertStoreCheck" on my Windows 8 computer?

"\Microsoft\Windows\AppID\VerifiedPublisherCertStoreCheck" is a scheduled task on Windows 8 system added as part of Windows installation.

You will see "\Microsoft\Windows\AppID\VerifiedPublisherCertStoreCheck" listed on Task Scheduler with the following information:

Name: VerifiedPublisherCertStoreCheck
Location: \Microsoft\Windows\AppID
Description: Inspects the AppID certificate cache for invalid or revoked certificates.
Actions: %windir%\system32\appidcertstorecheck.exe 
Triggers: At system startup
History: 

Programe file information about "appidcertstorecheck.exe":

File name: appidcertstorecheck.exe
File path: C:\Windows\system32\appidcertstorecheck.exe
File size: 18432 bytes
Last modified time: 7/25/2012 11:08:16 PM
File description: AppID Certificate Store Verification Task
File version: 6.2.9200.16384 (win8_rtm.120725-1247)
Company name: Microsoft Corporation

"appidcertstorecheck.exe" is scheduled to run at system startup time. It is disabled by default.

It is recommended to disable "\Microsoft\Windows\AppID\VerifiedPublisherCertStoreCheck" as a scheduled task.

⇒System Scheduled Tasks on Windows 8

⇒⇒Windows 8 Scheduled Tasks