How to display 32-bit dcom component configuration in 64-bit windows, 32-bit dcom
In the running column, enter the command dcomcnfg to open the Component Service Management window, but the Microsoft Excel program cannot be found. This is mainly a 64-bit system problem. excel is a 32-bit component, therefore, it cannot be seen in normal system component services.
You can enter comexp. msc-32 in the run box to open the 32-bit component service. You can see the excel component in it.
Programming Excel is actually to call the Excel COM component through. Net Framework. All COM components that need to be called in the Web environment need to be configured accordingly.
Many of my friends have reported that debugging a normal program in a Windows environment leads to errors in the Web environment. This step is missing.
The following describes the DCOM configuration process in detail.
1. Run "dcomcnfg" and open the DCOM configuration program. (Or start → set → Control Panel → Administrative Tools → Component Services → computer → my computer → DCOM configuration)
2. In the Application List, find "Microsoft Excel application" and click "properties". If no attribute is found under 2003, patch SP2.
3. Set "authentication level" on the "General" tab to "NONE ".
4. Select "use custom configuration permission" on the "Security" tab and click "edit ".
5. In the displayed dialog box, add "Internet Guest user" (generally IUSR _ machine name) and set the access type to "full control ".
6. Set the user on the "Identity" tab to "Interactive User ".
7. Click "application" to close the property page and DCOM configuration program. Configuration complete
How can we determine the 32-bit and 64-bit operating systems?
I. How can I determine whether my operating system is a 32-bit or 64-bit operating system? If your operating system is windows XP, follow these steps: 1. Right-click my computer and then click Properties ". 2. Click the General tab (the English version is General "). The OS is displayed as follows: if the OS is 64-bit, Windows XP Professional x64 Edition is displayed. If the system is 32-bit, Windows XP Professional is displayed. If your operating system is windows 7, follow these steps: 1. Right-click my computer and then click Properties ". 2. The System displays the following information: if the System is 64-bit, the 64-bit Operating System is displayed ). If the System is 32-bit, the 32-bit Operating System is displayed ).
Second, different configurations are required. The 64-bit operating system can only be installed on 64-bit computers (the CPU must be 64-bit ). At the same time, 64-bit common software must be installed to achieve the best performance of 64-bit (x64. A 32-bit operating system can be installed on a 32-bit (32-bit CPU) or 64-bit (64-bit CPU) computer. Of course, the 32-bit operating system is installed on a 64-bit computer, and its hardware is like a "big Mara car": the 64-Bit performance will be greatly reduced.
Third, the computing speed is different. The data width of 64-bit CPU GPRs (General-Purpose Registers) is 64-bit, And the 64-bit instruction set can run 64-bit data instructions, that is to say, the processor can extract 64-bit data at a time (only two instructions are required to extract 8 bytes of data at a time), which is 32-bit (four instructions are required to extract 4 bytes of data at a time) the performance is doubled in theory.
Fourth, different addressing capabilities. The advantage of a 64-bit processor lies in the system's memory control. Because the address uses a special integer, An ALU (Arithmetic Logic calculator) and register can process larger integers, that is, larger addresses. For example, Windows Vista x64 Edition supports up to 128 GB of memory and up to 16 TB of virtual memory, while 32-bit CPU and operating system support up to 4 GB of memory.
All in all, the 64-bit Microsoft Windows operating system must be backed up by the 64-bit host hardware and the 64-bit common software, in order to maximize the advantage of 64-bit, the "trinity" is indispensable (the principle is simple: the operating system is just a startup platform ). As for 64-bit computers, 32-bit operating systems and 64-bit operating systems can be installed with 32-bit software, it is designed to be "backward compatible", not the original meaning of the 64-bit design.
Although a 64-bit computer can install a 32-bit operating system, a 32-bit computer cannot install a 64-bit operating system. This is important to remember to avoid blind download and installation.
The component configuration DCOM is abnormal.
The following nine services of windows XP must be started, in some cases, these services of the system are shut down for some reason, and some inexplicable faults may occur.
① Application Management provides software installation services, such as distribution, release, and deletion.
② DCOM Server Process Launcher provides the loading function for the DCOM Service.
Regedit.exe modify the registry:
HKLM, SYSTEM \ ControlSet001 \ Services \ DcomLaunch, Start, 0x00010001, 2, and worker ② provide the loading function for the DCOM Service.