Anson | 
05 26th, 2020| 
Our remote connection server (Windows Server 2012 R2) As long as there is a user connected，A record appears in the event record 20499 A warning：
"Remote Desktop Services" took too long to load the user settings of user bbb from server aaa
May
26
May
20
Before installing Windows Server 2019 Time，Have noticed that the Server Core environment is selected by default，I feel that Microsoft wants to push the operating environment of this instruction mode。And after completing the Windows Server installation，When opening the Server Manager，Then it will suggest that we try to use “Windows Admin Center” IT，So if you want to say it, then try Windows Server 2019 Server Core install Windows Admin Center。
May
13
Wrote an article last week "Application specific permission settings cannot include CLSID – SQL」，At that time, I saw it in the system event record on SQL Server，The permissions in question are in the role of SQLSERVERAGENT，There is no problem with the permissions of the server itself (SYSTEM 及 Administrator)。I saw the same message on the AD server today，This time, the server itself has insufficient permissions，Therefore, multiple steps are required to retrieve the permissions from regedit。
May
11
Recently check the "event log" of each server，Want to reduce invalid information，And handling error information。This time on SQL Server，There will always be an error message like this：
應用程式特定 權限設定無法將含有 CLSID {806835AE-FD04-4870-A1E8-D65535358293} 與 APPID {EE4171E6-C37E-4D04-AF4C-8617BC7D4914} 之 COM 伺服器應用程式的 本機 啟用 權限授與來自位址 LocalHost (使用 LRPC) (在應用程式容器 無法使用 SID (無法使用) 中執行) 的使用者 NT SERVICE\SQLSERVERAGENT SID (S-1-5-80-344959196-2060754871-2302487193-2804545603-1466107430)。您可以使用元件服務系統管理工具修改此安全性權限。
May
6
We have several servers in the "system event" there will be many Schannel error messages，Click to show “The following serious warnings have been generated: 40。The internal error status is 1205。” Or “Received TLS from remote client application 1.2 Connection requirements，None of the encryption package servers supported by the client application。SSL connection request failed。” Wait for error message。The reason for this message is that this server provides encrypted services，But the user did not make the connection request in an encrypted way，I, for one，The two servers where this message appears are the Mail Server and the electronic sign-off server，Both use SSL certificates。
May
6
Checking a Windows Server today 2008 R2 event，Found "System Event" full of Windows Modules Installer start and stop messages，Internet crawling found An article Is discussing a similar issue，Only the role is “WMI Performance Adapter” service，The reason is that there is a remote service (Like SCOM: System Center Operations Manager) Monitoring computer，Will cause the WMI service to switch on and off in response to it。
May
4
The original Unifi Network Controller is installed on a Windows 7 Computer，Recently, I feel that the frequency of stopping the Controller is a little too high，I have to restart the program almost every day，Go online and find that there are official instructions to set the program as a service to run，But after the actual test，The service cannot start，Read the instructions carefully，Windows 8 Or Windows 10 Only，So simply find another Windows 10，And move the Unifi Network Controller。
Apr
30
Previously because the AD domain was 2003 Hierarchical relationship，So on Windows Server 2012 When you want to join the domain in a later version，You have to go to the "function" side first and put SMB 1.0 Client installed，To successfully join the domain。Recently my colleague upgraded the AD domain to 2008 R2，So I want to shut down the SMB v1 of these servers，To improve security。And when you want to remove，Unable to uncheck，Therefore, the removal method is commanded instead.。
Apr
29
SQL Server will run out of operating system memory by default，And on the server dedicated to SQL Server，In general, it is also recommended to use the memory as much as possible for SQL Server，One to improve efficiency，Secondly, it also reduces the IO loss of the hard disk。However, if there are specific circumstances that need to control the memory limit of SQL Server，SQL Server Management Studio (SSMS) To achieve。
Apr
29
Some time ago, the Synology NAS had a few TB less space，Later, according to official teaching，Connect to the system via SSH to view，Only found out that it was the trial CloudStation directory，Generated a huge amount of data，Because it's just a trial，The function does not meet my needs，Later it was removed，And manually remove the hidden @cloudstation folder。
