Windows 8 security insights
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A more frequent configuration can have a negative performance impact on Active Directory, the network, and Configuration Manager. Enable incremental synchronization instead of using a full sync schedule. For more information, see Active Directory group discovery.
Active Directory System Discovery is configured to run too frequently : You typically don't need to configure Active Directory System Discovery to occur more frequently than every three hours. For more information, see Active Directory system discovery. Active Directory User Discovery is configured to run too frequently : You typically don't need to configure Active Directory User Discovery to occur more frequently than every three hours.
For more information, see Active Directory user discovery. Configuration Manager updates the membership of these default collections with data from the Active Directory discovery methods.
This data may not be valid information for Configuration Manager clients. Heartbeat Discovery is disabled : Heartbeat discovery requires that you install the Configuration Manager client on devices. It's the only discovery method that clients start. All other methods occur on site servers. Heartbeat discovery is essential to keep client activity status current. It makes sure that the site doesn't accidentally age out the resource records from the site database.
For more information, see Heartbeat discovery. Long running collection queries enabled for incremental updates : Collections with a last incremental refresh time higher than 30 seconds use site server and database resources, which could potentially impact overall Configuration Manager performance. For more information, see Best practices for collections.
Reduce the number of applications and packages on distribution points : Microsoft officially supports a combined total of up to 10, packages and applications on a distribution point. Exceeding this total can lead to operational problems. For more information, see Size and scale numbers - distribution point. Secondary site installation issues : The installation status of some secondary sites is Pending or Failed.
These states mean that you started the install but it didn't complete successfully. Until the secondary site install finishes, clients may not communicate properly with the primary site.
Check the Monitoring workspace, and retry the installation. For more information, see Retry installation of a failed update.
Update all sites to the same version : Use the same version of Configuration Manager in a hierarchy. This configuration makes sure all sites provide the same functionality. Sites of different versions in the same hierarchy introduce interoperability scenarios.
Later versions of Configuration Manager include new features and resolve known issues. For more information, see Interoperability between different versions. For more information on these insights, see Remediation steps for Configuration Manager management insights.
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Starting in version , the following management insights help you manage the policy size of task sequences. When the size of the task sequence policy exceeds 32 MB, the client fails to process the large policy.
The client then fails to run the task sequence deployment. Large task sequences may contribute to exceeding maximum policy size : If you deploy these task sequences, clients may not be able to process the large policy objects. Reduce the size of the task sequence policy to prevent potential policy processing issues. Total policy size for task sequences exceeds policy limit : Clients can't process the policy for these task sequences because it's too large.
Reduce the size of the task sequence policy to allow the deployment to run on clients. For more information, see Reduce the size of task sequence policy. In version , the following insight moved to this group from the Proactive Maintenance group:. Starting in version , the following insights help you create better experiences for remote workers and reduce load on your infrastructure:. Configure VPN connected clients to prefer cloud based content sources : To reduce traffic on the VPN, enable the boundary group option to Prefer cloud based sources over on-premises sources.
For instance, to combat bootkits—one flavor of rootkits that subvert the boot process itself by installing their own code in place of the normal boot code—Windows 8 includes an improved kernel and device driver manager as part of its Trustworthy Computing TwC initiative for Windows. Digital certificates verify that the boot code is unmodified by rootkits, thus guaranteeing its authenticity. Fortunately, Stuxnet was relatively benign unless run on specific network configurations that included Siemens industrial controllers.
Nevertheless, it did prove that digital certificates can be stolen and used for nefarious purposes, and since all applications submitted to the Windows Store must be digitally signed, malware authors will likely be encouraged to steal digital certificates in the future.
Goretsky also points out that software developers themselves are more likely to become targeted by malware authors, given how the bulletproof aspects of Windows 8 could be subverted by injecting malicious code into digitally signed software before it is distributed as was demonstrated by the Induc virus, which spread between computers for years before it was detected.
Security Update for Windows 8 KB Select Language:. A security issue has been identified that could allow an unauthenticated remote attacker to compromise your system and gain control over it.
Details Version:. File Name:. File Size:. System Requirements Supported Operating System. Install Instructions To start the download, click the Download button and then do one of the following, or select another language from Change Language and then click Change. Click Run to start the installation immediately.