Cannot access windows installer solution preface www.2cto.com installed anti-virus software, no virus found, uninstall. Install anti-virus software and find hundreds of viruses. So uninstall it. After the uninstallation, I found a virus intrusion. I fought with it for half a day and finally wiped it out. The results showed that there were problems in many areas, such as clearing the search panel, losing services, and discontinuing disk management. When ICBC's protection program prompts an update, it finds that the installer is not working. Tip: windows installer cannot be accessed. Open the Service Management Panel and find that the Service is no longer running. If so, try to restore it (the "Logical Disk Manager Administrative Service" Service was just restored by using the SC command, after the restart, it succeeds.) recovery steps: www.2cto.com under Windows XP: Step 1: use NotePad to write 1. reg file, content: Windows Registry Editor Version 5.00 [HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Services \ MSIServer] "ImagePath" =-"ImagePath" = hex (2): 25, 00, 79,00, 6d, 00, 6f, 00, 6f, 00, \, 25, 00, 5c, 00, 6d, 32, 00, 5c, 00, 6d,, 00, 2f, 00, \ 56, 00, and then save the file as ". reg format. Double-click the file to import the file content to the Registry. Step 2: Click start --> Run, enter the CMD command, enter "msiexec/regserver" in the pop-up CMD Command Prompt window, and then open the Service Management Panel, check whether the Windows Installer Service appears. If yes, the repair is successful. You may need to restart your computer. if the service is not started, start it manually.