Allow access to the file extensions and folders that are in the packages and applications that you deploy. For best security, run Configuration Manager on a dedicated web server. If you need to run other applications on the web server, use a custom website for Configuration Manager. For information, see Websites for site system servers. For more information, see Configure request filtering in IIS. To make sure that clients can successfully communicate with a management point, on the management point server make sure IIS allows the following HTTP verbs:.
Skip to main content. This browser is no longer supported. Download Microsoft Edge More info. Contents Exit focus mode. Please rate your experience Yes No. Any additional feedback? For more information, Site and site system prerequisites.
Third-party add-ons that use Microsoft. NET 4. For more information, see External dependencies require. The computer account for the secondary site has the following permissions to the setup source folder and share:. The Configuration Manager version in the specified source folder for the secondary site installation matches the Configuration Manager version of the primary site.
The specified site code isn't already in use in the Configuration Manager hierarchy. Specify a unique site code for this site. When you expand a primary site to a hierarchy, the site server in passive mode role isn't installed on the standalone primary site.
The site isn't using network load balancing NLB with any virtual locations for active software update points. When using an availability group, the server must meet the minimum requirements. When using an availability group, you need to configure replicas with the same seeding mode.
The SQL Server meets the minimum requirements for site upgrade. Starting in version , this check will fail if the amount of replicated data from the primary site will exceed the GB size limit of SQL Server Express. SQL Server is installed on the secondary site server. You can't install SQL Server on a remote site system for a secondary site. The user account that runs Configuration Manager setup has the sysadmin role on the SQL Server instance that you selected for site database installation.
This check also fails when setup is unable to access the instance for the SQL Server to verify permissions. The user account that runs Configuration Manager setup has the sysadmin role on the SQL Server role instance that you selected as the reference site database.
SQL Server sysadmin role permissions are required to modify the site database. Applies to: Central administration site, primary site, secondary site, Configuration Manager console, management point, distribution point.
All site servers in the hierarchy meet the Configuration Manager minimum version that's required for upgrade. Server with the site server, management point, or distribution point roles aren't part of a Windows Cluster. The Configuration Manager setup process doesn't block installation of the site server role on a computer with the Windows role for Failover Clustering. SQL Server Always On availability groups require this role, so previously you couldn't colocate the site database on the site server.
With this change, you can create a highly available site with fewer servers by using an availability group and a site server in passive mode. For more information, see High availability options. For more information, see Support for Active Directory domains. The user account running setup has Administrator rights on the distribution point.
The computer account of the site server has Administrator rights on the management point and distribution point. The site server is processing critical inboxes in a timely fashion. Inboxes don't contain files older than one day. To resolve this warning, check whether the despooler and scheduler site system components are running. Starting in version , this check warns about the presence of the Log Analytics connector for Azure Monitor.
Starting in version , this connector is removed from the product. This check will be an error that blocks upgrade. The Upgrade Readiness service is retired as of January 31, For more information, see Windows Analytics retirement on January 31, Desktop Analytics is the evolution of Windows Analytics. For more information, see What is Desktop Analytics.
If your Configuration Manager site had a connection to Upgrade Readiness, you need to remove it and reconfigure clients. For more information, see Remove Upgrade Readiness connection. If you ignore this prerequisite warning, Configuration Manager setup automatically removes the Upgrade Readiness connector.
For more information, see Overview of cloud management gateway. The server's copy is called the source file. The objective of the RDC application is to download the file updates to the client, which uses them to construct a target file that combines the updates from the source file with the unchanged contents from the seed file.
The RDC client and server each use the RDC library's FilterMax signature generator to divide their copy of the file into chunks and compute a strong hash, called a signature, for each chunk of file data. Thus, the client has a list of signatures for the seed file, and the server has a list of signatures for the source file.
These signature lists can be computed on the fly, or they can be precomputed. The client initiates the RDC protocol by requesting the source signature list from the server. Then the client compares each source signature against the signatures in its own seed signature list. If a source signature matches a seed signature, the client already has the file data for that signature.
If a source signature does not appear in the client's list of seed signatures, the client must request the specified chunk of file data from the server. The result of comparing the two signature lists is a needs list , which describes which chunks of file data, from where seed or source file , are needed to construct the target file on the client computer.
Each entry in the needs list is called a needs block. The client iterates through each needs block and copies the specified chunk of the source or seed file data to the target file. For information about which operating system versions are required to use a particular programming element, see the Requirements section of the reference page for that element.
End users should not disable RDC. If you disable RDC, any application that uses it will either not be able to take advantage of RDC or will simply fail. About Remote Differential Compression.
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