Windows Installer Service Could Not Be Accessed Error During Program Installation
When trying to add, install, uninstall or remove a program from Windows operating system, the setup will halt with the following error message, which may happen in all editions of Windows Me (Millennium Edition), Windows 98, Windows NT 4.0, Windows 2000, Windows XP and Windows 2003 with or without service pack:
The Windows Installer Service could not be accessed. This can occur if you are running Windows in safe mode, or the Windows Installer is not correctly installed. Contact your support personnel for assistance.
This error symptom is most likely caused by the Windows Installer files are damaged or are missing, or Windows Installer Service is unregistered or damaged. Other reason can be incorrect permission issue on the related registry keys that Windows Installer trying to access. The error will only occured when the program’s setup installer uses the Windows Installer Microsoft Software Installation (MSI) package file.
Microsoft provides various possible solutions and resolutions for different scenerious, as in KB319624 (for Microsoft Windows Installer 1.0 and 2.0 in Windows NT 4.0 SP6, Windows 2000 SP1, SP2 and SP3), KB315353 (for Microsoft Plus! and Office in Windows XP Professional, x64 Ed and Home edition) and KB315346 (for Windows XP Professional and Home Edition, Windows 2000 Server, Advanced Server, and Pro Ed, Windows NT Server 4.0 Std and Developer Edition, Windows ME and Windows 98 SE), KB324516 (for Microsoft Office 2007, 2003, XP, 2000), KB217521 (for Office 2000), and KB873280 (for Money 2002, 2003, 2004, 2005). The common methods generally recommended to solve the “Windows Installer Service Could Not Be Accessed” error is by unregister (MSIEXEC /UNREGISTER) and then re-register (MSIEXEC /REGSERVER) the Windows Installer, in Safe Mode if need to. Otherwise, verify that SYSTEM account has full control access permissions to the HKEY_CLASSES_ROOT hive in the Windows registry or reinstall Windows Installer with Windows Installer 3.1 Redistributable (v2).
If you still facing the Windows Installer stop error after performing recommended steps provided by Microsoft Knowledge Base articles, try to ensure that Windows Installer service is running, or force start it.
- Open Run, and type in services.msc then press Enter. Alternatively, go to Control Panel -> Administrator Tools -> Services.
- Locate Windows Installer in the all install services listing.
- Verify that the Status is Started. If the Status column is blank, right click on Windows Installer and select Start.
- If you get error trying to force start the Windows Installer service, try to change the Startup Type to Automatic (default is Manual), and then restart the computer.
The above steps can also be performed via MSConfig to set Windows Installer service to auto start on boot up.
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Entries (RSS)
January 12th, 2008 23:02
Thanks a lot for this, I managed to fix an issue I had after using Combofix to remove a virus called CMIII that stopped me from installing any applications.
I just used msiexec /unregister and msiexec /regserver to fix my problems, also had to set the windows installer service to automatic startup.
January 14th, 2008 02:09
Here is a link to help http://groups.google.com/group/microsoft.public.windows.vista.installation_setup/browse_frm/thread/58ba7bd89953470b/1d44e604d42dee5e?tvc=1#1d44e604d42dee5e
If link not work: (here is an extract; credits to “The CAT”)
Here’s the easy steps:
1. Go to your friend’s computer with a Windows Vista (Any Version) that has the Windows
Installer service running correctly and run regedit(Start-Run-Regedit)
2. Go to the location
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\msiserver
3. Right click on this key and select “Export” and save the key to a Flash
Drive or other.
4. On your Damaged machine, Run/ Double click saved .reg file (from working machine) and import registry
settings into damaged Vista computer.
5. You should be set to resume your normal life.
*****
Some notes:
If you cant get your own reg key from a friend running vista, then you
could try and use the “clean reg key I used” download here:
http://www.savefile.com/files/1315653
Note the file is about very small (about 6.7 kb), I named it :123.reg
Take care.
March 21st, 2008 13:35
MSIEXEC /REGSERVER does not work in Vista’s version of installer (Windows ® Installer. V 4.00.6001.0). Check here for a msiserver export: http://www.winhelponline.com/blog/vista-the-windows-installer-service-could-not-be-accessed/
June 19th, 2008 18:20
[...] and im not in safe mode either. so why is it doing this? and it is 64bit version. Check out this article. It should apply to Vista as well. Keep me updated. I hope it helps __________________ Response [...]