How to Check SMB Client Configuration in Windows 11

Friday, September 25, 2026

Learn how to check SMB client configuration in Windows 11 using PowerShell, inspect security settings, and troubleshoot network share access.

When Windows 11 connects to a shared folder, NAS device, file server, or another computer over the network, it uses the SMB client to establish and manage the connection. If you are troubleshooting network shares, SMB authentication, connection compatibility, signing, encryption, or performance, checking the SMB client configuration can provide useful information.

Windows 11 includes PowerShell cmdlets that allow you to inspect the SMB client without relying entirely on graphical settings. The most useful command is Get-SmbClientConfiguration, which displays the configuration used by the SMB client on the local computer.

This guide explains how to check SMB client configuration in Windows 11, understand important settings, inspect SMB signing and encryption requirements, review Multichannel-related settings, and troubleshoot common network share problems.

What Is SMB Client Configuration?

SMB, or Server Message Block, is the protocol Windows uses for many network file and printer sharing operations. When your Windows 11 PC accesses a shared folder on another computer or a NAS, your PC acts as the SMB client.

The SMB client configuration controls how Windows behaves when it connects to SMB servers. Depending on the Windows version and configuration, these settings can affect security, authentication, connection behavior, caching, Multichannel, signing, encryption, and other SMB features.

This is different from SMB server configuration. The server configuration controls how your Windows computer accepts incoming SMB connections, while the client configuration controls how your computer connects to remote SMB servers.

If you also manage incoming SMB connections on your Windows 11 PC, see How to Check SMB Server Configuration in Windows 11.

Why Check SMB Client Configuration?

Checking SMB client settings can be useful when a Windows 11 computer has problems accessing network shares or behaves differently from other computers on the same network.

Check whether SMB signing is required.
Check whether SMB encryption is required.
Review SMB Multichannel-related settings.
Inspect SMB connection and session behavior.
Troubleshoot compatibility with NAS devices.
Investigate guest-access problems.
Review SMB caching and connection settings.
Compare configurations between multiple Windows PCs.
Collect configuration information before changing SMB settings.

It is generally better to inspect the current configuration before changing anything. A setting that appears related to a connection problem may actually be working as intended, while the real problem may be network discovery, firewall configuration, permissions, authentication, or the remote SMB server.

How to Open PowerShell as Administrator

Many SMB configuration commands can be used from PowerShell, but administrative privileges may be required when you want to change settings.

Open the Start menu.
Type PowerShell.
Right-click Windows PowerShell or the appropriate PowerShell application.
Select Run as administrator.
Select Yes if User Account Control appears.

You can use a normal PowerShell window for many read-only checks, but an elevated PowerShell window is recommended when troubleshooting or preparing to modify SMB client configuration.

How to Check SMB Client Configuration

The primary command is:

Get-SmbClientConfiguration

This command retrieves the SMB client configuration for the current Windows computer.

The output can contain numerous properties. Depending on the Windows 11 version and installed features, you may see settings related to security signatures, Multichannel, caching, connection limits, timeouts, compression, encryption, and other SMB client behavior.

For a more readable output, use:

Get-SmbClientConfiguration | Format-List

This displays the configuration as a property-by-property list instead of a compact PowerShell table.

Check Specific SMB Client Settings

If you only need to inspect a few settings, selecting individual properties makes the output easier to understand.

Get-SmbClientConfiguration | Select-Object EnableMultiChannel, RequireSecuritySignature, RequireEncryption

This approach is useful when documenting a computer or comparing several Windows 11 systems.

You can also use:

Get-SmbClientConfiguration | Format-List EnableMultiChannel, RequireSecuritySignature, RequireEncryption

If a property is not available on your particular Windows 11 build, PowerShell may display an empty value or omit it. SMB configuration properties can vary according to Windows version and feature availability.

Check SMB Signing

SMB signing is a security mechanism that helps protect SMB traffic against tampering and certain relay or spoofing scenarios.

To check whether the SMB client requires security signatures, run:

Get-SmbClientConfiguration | Format-List RequireSecuritySignature

If the result is:

RequireSecuritySignature : True

the SMB client is configured to require signing for applicable outbound SMB connections.

If it shows:

RequireSecuritySignature : False

the client is not configured to require SMB signing through this setting.

Windows 11 version 24H2 introduced additional SMB security behavior, and Microsoft documents different signing requirements depending on Windows edition and configuration. Therefore, do not assume that one Boolean value alone explains every SMB connection.

Check SMB Encryption Requirement

SMB encryption protects SMB data against interception and snooping. On supported Windows 11 versions, the SMB client can be configured to require encryption for outbound SMB connections.

To inspect the client encryption requirement, use:

Get-SmbClientConfiguration | Format-List RequireEncryption

A result of:

RequireEncryption : True

means the SMB client requires encryption for outbound SMB connections under that configuration.

Microsoft documents this machine-wide SMB client encryption requirement for Windows 11 version 24H2 and later. If required encryption is enabled, the client will not connect to an SMB server that does not support the necessary SMB 3.x encryption capabilities.

This can be important when connecting Windows 11 to older file servers, older NAS devices, or third-party SMB implementations.

Check SMB Multichannel

SMB Multichannel allows SMB to use multiple network paths or connections when supported by the system and network configuration. It can improve throughput and resilience in suitable environments.

To check whether SMB Multichannel is enabled in the client configuration, run:

Get-SmbClientConfiguration | Format-List EnableMultiChannel

You may see:

EnableMultiChannel : True

The SMB client configuration also includes properties related to the number of connections used per RSS network interface and other SMB connection behavior.

To inspect the active Multichannel connections after connecting to an SMB server, use:

Get-SmbMultichannelConnection

This is useful because a configuration check tells you what the client is configured to support, while the Multichannel connection command helps you inspect what is actually being used.

Check SMB Compression Settings

Modern SMB implementations can support compression in appropriate circumstances. Windows 11 includes SMB client settings related to compression behavior.

To inspect available compression-related settings, run:

Get-SmbClientConfiguration | Format-List DisableCompression, EnableCompressibilitySampling, CompressibleThreshold

Do not change compression settings simply because a value looks unfamiliar. These settings can affect how SMB traffic is handled, and the correct configuration depends on the Windows version, workload, network, and remote SMB server.

Check SMB Connection and Timeout Settings

The SMB client configuration contains settings that influence connection persistence and timeout behavior.

You can inspect several of them with:

Get-SmbClientConfiguration | Format-List KeepConn, SessionTimeout, ExtendedSessionTimeout, MaximumConnectionCountPerServer

These values can be useful when investigating unusual behavior such as connections being dropped, repeated reconnections, or a large number of SMB connections to the same server.

However, these settings should not normally be changed as a first troubleshooting step. First verify the network connection, SMB server availability, permissions, authentication, and firewall configuration.

Check SMB Caching Settings

SMB client configuration also contains several cache-related properties. These can affect how information associated with remote files and directories is cached.

For example:

Get-SmbClientConfiguration | Format-List DirectoryCacheEntriesMax, DirectoryCacheEntrySizeMax, DirectoryCacheLifetime

You can also inspect file information cache settings:

Get-SmbClientConfiguration | Format-List FileInfoCacheEntriesMax, FileInfoCacheLifetime

And file-not-found cache settings:

Get-SmbClientConfiguration | Format-List FileNotFoundCacheEntriesMax, FileNotFoundCacheLifetime

These settings are more relevant to advanced troubleshooting and performance analysis than everyday network-share configuration.

Check Opportunistic Locking

Opportunistic locking, commonly called oplocks, is an SMB mechanism that can help improve file access performance by allowing appropriate client-side caching behavior.

To inspect the related client setting, run:

Get-SmbClientConfiguration | Format-List UseOpportunisticLocking, OplocksDisabled

When troubleshooting applications that use network files, do not immediately disable caching or oplocks. Application behavior, file locking, SMB server implementation, and network conditions can all affect the result.

Check SMB Security and Guest Access

Some SMB compatibility problems involve guest authentication or other security restrictions. Modern Windows versions have increasingly strict SMB security behavior, so an older NAS or third-party SMB device may behave differently from a modern Windows file server.

Depending on the Windows 11 version, you can inspect relevant client settings with:

Get-SmbClientConfiguration | Format-List EnableInsecureGuestLogons, AuditInsecureGuestLogon, BlockNTLM

If a legacy device requires insecure guest access, do not automatically disable security protections just to make the connection work. Determine whether the remote device can be configured to use authenticated access or a more secure SMB configuration.

Microsoft specifically documents security considerations around SMB signing and guest access, including compatibility issues with third-party SMB servers.

Check the SMB Client Configuration Before Changing It

If you are preparing to modify SMB client settings, first save the current configuration.

Get-SmbClientConfiguration | Out-File "$env:USERPROFILE\Desktop\smb-client-configuration.txt"

You can also export selected properties:

Get-SmbClientConfiguration |
Select-Object EnableMultiChannel, RequireSecuritySignature, RequireEncryption, EnableInsecureGuestLogons |
Export-Csv "$env:USERPROFILE\Desktop\smb-client-settings.csv" -NoTypeInformation

This gives you a record that can be compared with another Windows computer or used as a reference if a configuration change causes unexpected behavior.

How to Compare SMB Client Configuration Between PCs

When multiple Windows 11 computers access the same server, comparing their SMB client configuration can help identify differences.

Run the following on each computer:

Get-SmbClientConfiguration |
Select-Object EnableMultiChannel, RequireSecuritySignature, RequireEncryption, EnableInsecureGuestLogons

Record the results for each PC and compare them.

If one computer can access a network share while another cannot, also compare the Windows version, network profile, firewall configuration, credentials, SMB connections, and server-side settings. SMB client configuration is only one part of the complete file-sharing path.

SMB Client Configuration vs SMB Server Configuration

Configuration	Purpose	Main PowerShell Command
SMB Client	Controls how Windows connects to remote SMB servers	`Get-SmbClientConfiguration`
SMB Server	Controls how Windows accepts incoming SMB connections	`Get-SmbServerConfiguration`
SMB Sessions	Shows active client sessions connected to the SMB server	`Get-SmbSession`
SMB Connections	Shows SMB client connections to remote servers and shares	`Get-SmbConnection`
Open SMB Files	Shows files currently opened through SMB	`Get-SmbOpenFile`
SMB Share Permissions	Shows access-control entries for SMB shares	`Get-SmbShareAccess`

This distinction is important when troubleshooting. For example, Get-SmbClientConfiguration tells you how the local client is configured, while Get-SmbConnection shows connections that actually exist.

How SMB Client Configuration Fits Into Troubleshooting

If a Windows 11 PC cannot access a network share, work through the problem systematically rather than changing SMB settings randomly.

Verify that the computers are connected to the same network.
Check the network profile.
Verify Network Discovery when appropriate.
Check File and Printer Sharing settings.
Check Windows Firewall configuration.
Verify the SMB server configuration.
Check SMB share permissions.
Check NTFS folder permissions.
Check active SMB sessions and connections.
Check open SMB files when file-locking is suspected.
Inspect SMB client configuration.
Compare SMB signing and encryption requirements between the client and server.

You can review the network profile in How to Check Network Profile in Windows 11, Network Discovery in How to Check Network Discovery Settings in Windows 11, and File and Printer Sharing in How to Check File and Printer Sharing Settings in Windows 11.

For firewall-related problems, see How to Check Windows 11 Firewall Settings.

Useful SMB Client PowerShell Commands

Command	Purpose
`Get-SmbClientConfiguration`	View SMB client configuration
`Get-SmbConnection`	View active SMB client connections
`Get-SmbMultichannelConnection`	View SMB Multichannel connections
`Get-SmbClientNetworkInterface`	View SMB client network interfaces
`Get-SmbServerConfiguration`	View SMB server configuration
`Get-SmbSession`	View SMB server sessions
`Get-SmbOpenFile`	View files opened through SMB
`Get-SmbShare`	View SMB shares
`Get-SmbShareAccess`	View SMB share permissions

Should You Change SMB Client Configuration?

In most cases, checking the configuration is safer than immediately changing it.

SMB settings can affect compatibility and security. For example, requiring SMB encryption can prevent connections to servers that do not support the required SMB version or encryption capability. Similarly, SMB signing requirements can cause compatibility problems with third-party SMB servers that do not support signing.

Before making changes, identify the exact problem, record the current configuration, verify the capabilities of the remote SMB server, and make one controlled change at a time.

Microsoft provides Set-SmbClientConfiguration for changing supported SMB client settings. Because changing security-related SMB options can affect network access, use elevated PowerShell and document the original configuration before making changes.

Frequently Asked Questions

What command checks SMB client configuration in Windows 11?

Use Get-SmbClientConfiguration in PowerShell. It retrieves the SMB client configuration of the local Windows computer.

How do I check whether SMB signing is required?

Run Get-SmbClientConfiguration | Format-List RequireSecuritySignature. A value of True means the client is configured to require SMB signing through that setting.

How do I check SMB encryption requirements?

Run Get-SmbClientConfiguration | Format-List RequireEncryption. On supported Windows 11 versions, this shows whether the SMB client is configured to require encryption for outbound connections.

Can SMB client settings affect NAS compatibility?

Yes. Security requirements such as SMB signing or encryption can affect whether Windows 11 can connect to an older or third-party SMB server. Check the capabilities and configuration of both devices before changing security settings.

Is SMB client configuration the same as SMB server configuration?

No. SMB client configuration controls outbound SMB behavior, while SMB server configuration controls incoming SMB connections. Use Get-SmbClientConfiguration for the client and Get-SmbServerConfiguration for the server.

Can I export SMB client settings?

Yes. PowerShell can export selected SMB client properties to CSV or save the complete output to a text file for documentation and troubleshooting.

Final Thoughts

Checking SMB client configuration is a useful advanced troubleshooting step for Windows 11 network sharing. The Get-SmbClientConfiguration cmdlet provides a centralized view of important SMB client behavior, including security requirements, Multichannel, connection settings, caching, and other configuration options.

For everyday troubleshooting, start with the most relevant settings instead of changing everything. Check SMB signing and encryption when security or compatibility is involved, inspect Multichannel when investigating SMB performance, and compare the client configuration with the remote SMB server when two systems behave differently.

Once you understand the SMB client configuration, you can combine it with Get-SmbConnection, Get-SmbSession, Get-SmbOpenFile, and Get-SmbShareAccess to build a much clearer picture of what is happening across a Windows 11 network file-sharing environment.