Now when installing the software, the prompt: windows Installer service cannot be accessed. Maybe you are running windows in safe mode, or windows Installer is not installed correctly. Please contact your support personnel for help. Therefore, no software can be installed and uninstalled.
First, Microsoft Windows Installer component introduction:
As one of the components of Win2K/WinXP, Microsoft Windows Installer is a tool specially used to manage and configure software services. Under Win95, Win98, WinMe and WinNT4 4,0, it is provided as an add-on product, allowing users to effectively install and configure software products and applications. The new installer provides new functions for software products, such as using the command line to install products, which increases the customization of users.
Windows Installer software installation technology. This technology includes Windows Installer server for 32-bit Windows operating system and new software package file format for storing configuration and installation information.
Windows Installer is not only an installer, but also an extensible software management system. Windows Installer manages the installation of software, the addition and deletion of software components, the monitoring of file recovery and the maintenance of basic disaster recovery by using rollback.
In addition, Windows Installer supports installing and running software from multiple sources, and can be customized by developers who want to install customized programs.
Secondly, the functions of Windows Installer include:
Restore the computer to its original state when the installation fails: Windows Installer keeps track of all changes made to the system during the program installation. If the installation fails, the installer can restore the system to its initial state. This is called "rollback".
Help prevent conflicts between specific forms of programs: The program being installed or uninstalled may cause problems with another program already installed on the computer, or even cause the computer to stop responding (hang up). When an installation operation updates a dynamic link library (DLL) file shared by an existing program, or when an uninstall operation deletes a DLL file shared by another program, the installer can implement some installation rules to help prevent conflicts.
Diagnose and repair damaged programs: The program can ask the installer to determine whether the installed program has missing files or damaged files. Then, it can ask the service repair program to copy only the files that have been found to be lost or damaged as needed.
Uninstall existing programs reliably: The installer can reliably uninstall any previously installed programs and delete all related registry keys and program files, except other installation software enjoyed by files and registry keys.
Support on-demand installation function: You can instruct the installer to install the minimum subset of programs first. After that, the first time you use a feature that requires an add-in, the add-in will be installed automatically.
Support unattended program installation: The installer supports script installer according to the instructions of the administrator.
Windows Installer technology is divided into the following two parts, which work together: client installation service (Msiexec.exe) and Microsoft software installation (MSI) package files. Windows Installer uses the information contained in the package file to install the program.
Msiexec.exe program is a component of Windows Installer. When the installer calls Msiexec.exe, it uses Msi.dll to read the package (. Msi) file, applying any transformation (. Mst) file and merge the command line options provided by the installer. The installer performs all installation-related tasks, including copying files to the hard disk, modifying the registry, creating shortcuts on the desktop, and displaying a dialog box to prompt users to enter installation preferences if necessary.
After installing Windows Installer on your computer, it will change the registered file type. So that when you double-click. Msi file, Msiexec.exe will run.
Each MSI package file contains a relational database for storing instructions and data needed to install (or uninstall) programs in various installation schemes.
Third, Windows Installer error solution
Windows Installer(windows installation service) is a general software distribution method. Nowadays, many softwares use windows Installer as their own installation program, and sometimes windows Installer will make mistakes due to various reasons and its own defects.
Symptom 1: After deleting the program, when running some software, a window "windows is configuring Windows Installer, please wait" will always pop up.
Solution:
1. Reinstall Windows Installer. There are two files named instmsi.exe and InstMsiW.exe in the root directory of the office XP installation disk. Instmsi.exe is used for Win9x/Me and instmsiw.exe is used for Win2000/XP; .
2. Open Group Policy → Computer Configuration → Management Templates →Windows Components →Windows Installer→ Disable Windows Installer. Only in this way can you install a lot of software. This method is used in Win2000/XP.
3. Please see the "Final Solution" at the end of this article.
Symptom 2: When Win2000/XP installs the software, it prompts "windows Installer cannot be accessed, and the status of windows Installer in the service is stopped, so it cannot be started".
Solution:
1. At the command prompt, enter: misiexec /regserver.
2. Start windows Installer in Administrative Tools → Services.
Symptom 3: Win2000/XP prompts "Windows Installer service cannot be accessed ..." When installing the software.
Solution:
1. Check whether the current user has administrator rights;
2. End the Ikernel and exe processes before installation;
3. Delete all files, programs, files and public files in the system installation directory to install the shield engine, and then install it.
4. First run "msiexec /unregserver" to stop the Windows Installer service;
Next, install InstMsiW.exe (available from the (office XP) installation disk in the root directory, or downloaded from the address on the Internet: fg.exe Open Component Service. Expand Component Services-Expand Computer-Select My Computer-Open Configure My Computer on the toolbar-Select the COM Security tab-Open Edit Restrictions under Startup and Activation Permissions-There are two groups or users, Administrator and Everyone, and each group or user has four permissions to start locally. Change all its two 8 permissions to allow! Confirm! All is well
This method is suitable for normal windows installer service.
I solved it myself in this way, I hope it will be useful to everyone!
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