Exchange 2010安装完毕后，出现了不少Event ID 106错误，如下所示： 

All errors are from Performance counter category name MSExchange RpcClientAccess.

Event ID 106, Source MSExchange Common, Level Error:

Log Name:      Application
Source:        MSExchange Common
Date:          24.1.2011 21:25:17
Event ID:      106
Task Category: General
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      ServerName.fqdn.local
Description:
Performance counter updating error. Counter name is RPC Requests, category name is MSExchange RpcClientAccess. Optional code: 3. Exception: The exception thrown is : System.InvalidOperationException: The requested Performance Counter is not a custom counter, it has to be initialized as ReadOnly.
   at System.Diagnostics.PerformanceCounter.Initialize()
   at System.Diagnostics.PerformanceCounter.set_RawValue(Int64 value)
   at Microsoft.Exchange.Diagnostics.ExPerformanceCounter.set_RawValue(Int64 value)
Last worker process info : System.UnauthorizedAccessException: Access to the registry key 'HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\ExchangeServer\v14\Transport' is denied.
   at Microsoft.Win32.RegistryKey.Win32Error(Int32 errorCode, String str)
   at Microsoft.Win32.RegistryKey.CreateSubKey(String subkey, RegistryKeyPermissionCheck permissionCheck, RegistrySecurity registrySecurity)
   at Microsoft.Exchange.Diagnostics.ExPerformanceCounter.GetLastWorkerProcessInfo()

上述错误的原因查了微软相关KB，微软官方说明可以忽略此错误，此错误是由Performance counter error 造成的，解决此问题的办法，打开Exchange Powershell，输入以下指令：

[PS]C:\>Add-PSSnapin Microsoft.Exchange.Management.PowerShell.Setup

[PS]C:\>New-PerCounters -DefinitionFileName "C:\Program Files\Microsoft\Exchange Server\V14\Setup\RpcClientAccessPerformanceCounters.xml"

执行完上述两条命令，即可以解决Event ID 106事件日志问题。