PS C:\windows\system32> Update-Help
Update-Help : 无法更新带有 UI 区域性 {zh-CN} 的模块“ISE, Microsoft.Powershell.Management, Microsoft.PowerShell.Utility, ActiveDirectory, ADCSAdminis
tration, ADCSDeployment, ADDSDeployment, ADFS, ADRMS, ADRMSAdmin, AppLocker, Appx, BestPractices, BranchCache, CimCmdlets, DFSN, DirectA
ccessClientComponents, Dism, DnsClient, GroupPolicy, International, iSCSI, IscsiTarget, Kds, Microsoft.PowerShell.Diagnostics, Microsoft
.PowerShell.Host, Microsoft.PowerShell.Security, Microsoft.WSMan.Management, MMAgent, MsDtc, NetAdapter, NetConnection, NetEventPacketCa
pture, NetLbfo, NetNat, NetQos, NetSecurity, NetSwitchTeam, NetTCPIP, NetworkConnectivityStatus, NetworkTransition, NFS, PcsvDevice, PKI
, PrintManagement, PSDesiredStateConfiguration, PSScheduledJob, PSWorkflow, PSWorkflowUtility, RemoteDesktop, ScheduledTasks, SecureBoot
, ServerCore, ServerManager, ServerManagerTasks, SmbShare, SmbWitness, SoftwareInventoryLogging, StartScreen, Storage, TLS, Troubleshoot
ingPack, TrustedPlatformModule, UserAccessLogging, VpnClient, Wdac, WebAdministration, Whea, WindowsDeveloperLicense, WindowsErrorReport
ing, WindowsSearch, Microsoft.PowerShell.Core”帮助: 无法连接到帮助内容。存储帮助内容的服务器可能不可用。请确认该服务器可用，或等到该服务器重新联机，然后重试该命令。
所在位置 行:1 字符: 1
+ Update-Help
+ ~~~~~~~~~~~
+ CategoryInfo : InvalidOperation: (:) [Update-Help]，Exception
+ FullyQualifiedErrorId : UnableToConnect,Microsoft.PowerShell.Commands.UpdateHelpCommand
上面的问题的原因是当前操作系统的语言集为中文，如果语言为英文，则没有上面的问题。这是因为PowerShell 某些命令的在线文档地址错误，用以下命令行忽略即可：
Update-Help -ErrorAction SilentlyContinue
