Do you experience this kind of problem whenever you attemp to install an application in windows box (2k, xp)?

“The Windows Installer service could not be accessed. This can occur if you are running Windows in safe mode, or if the Windows Installer is not correctly installed. Contact your support personnel for assistance.”

On Microsoft Website I found This the solution is very easy:

1. right click your root windows installation drive i.e drive where you installed windows
2. click properties at the bottom
3. select security tab
4. click Add and scroll down to SYSTEM account click add and click OK.
5. allow Full control permission and click Apply and then Ok.

This should solve your problem with windows installer.

A Little registry hack that can change login and Security Dialog Title

[Start] [Run] [Regedit]

Go to: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\ CurrentVersion\Winlogon

Modify/Create String Value of Data type REG_SZ Named [Welcome]
Value Data: [0 = Disabled / 1 = Enabled]

Exit Registry / Reboot

You can Access these commands from run option in the start menu or just press +R (Window key is Generally between Alt & ctrl key on the keyboard) & there you go to unleash these commands…
Knowing these commands is goning give you the Professional
The Commands have been seperated by “~”
TO Open… Commands
Accessibility Controls “access.cpl”
Add Hardware Wizard “hdwwiz.cpl”
Add/Remove Programs “ppwiz.cpl “
Administrative Tools “control admintools”
Automatic Updates “wuaucpl.cp”
Bluetooth Transfer Wizard “fsquirt”
Calculator “calc”
Certificate Manager “certmgr.msc”
Character Map “charmap”
Check Disk Utility “chkdsk”
Clipboard Viewer “clipbrd”
Command Prompt “cmd”
Component Services “dcomcnfg”
Computer Management “compmgmt.msc”
Date and Time Properties “timedate.cpl”
DDE Shares “ddeshare”
Device Manager “devmgmt.msc”
Direct X Control Panel (If Installed)* “directx.cpl”
Direct X Troubleshooter “dxdiag”
Disk Cleanup Utility “cleanmgr”
Disk Defragment “dfrg.msc”
Disk Management “diskmgmt.msc”
Disk Partition Manager “diskpart”
Display Properties “control desktop”
Display Properties “desk.cpl”
Display Properties (w/Appearance Tab Preselected) “control color”
Dr. Watson System Troubleshooting Utility “drwtsn32″
Driver Verifier Utility “verifier”
Event Viewer “eventvwr.msc”
File Signature Verification Tool “sigverif”
Findfast “findfast.cpl”
Folders Properties “control folders”
Fonts “control fonts”
Fonts Folder “fonts”
Free Cell Card Game “freecell”
Game Controllers “joy.cpl”
Group Policy Editor (XP Prof) “gpedit.msc”
Hearts Card Game “mshearts”
Iexpress Wizard “iexpress”
Indexing Service “ciadv.msc”
Internet Properties “inetcpl.cpl”
IP Configuration (Display Connection Configuration) “ipconfig /all”
IP Configuration (Display DNS Cache Contents) “ipconfig /displaydns”
IP Configuration (Delete DNS Cache Contents) “ipconfig /flushdns”
IP Configuration (Release All Connections) “ipconfig /release”
IP Configuration (Renew All Connections) “ipconfig /renew”
IP Configuration (Refreshes DHCP & Re-Registers DNS) “ipconfig /registerdns”
IP Configuration (Display DHCP Class ID) “ipconfig /showclassid”
IP Configuration (Modifies DHCP Class ID) “ipconfig /setclassid”
Java Control Panel (If Installed) “jpicpl32.cpl”
Java Control Panel (If Installed) “javaws”
Keyboard Properties “control keyboard”
Local Security Settings “secpol.msc”
Local Users and Groups “lusrmgr.msc”
Logs You Out Of W*NDOW$ “logoff”
Mic*ft Chat “winchat”
Minesweeper Game “winmine”
Mouse Properties “control mouse”
Mouse Properties “main.cpl”
Network Connections “control netconnections”
Network Connections “ncpa.cpl”
Network Setup Wizard “netsetup.cpl”
Notepad “notepad”
Nview Desktop Manager (If Installed) “nvtuicpl.cpl”
Object Packager “packager”
ODBC Data Source Administrator “odbccp32.cpl”
On Screen Keyboard “osk”
Opens AC3 Filter (If Installed) “ac3filter.cpl”
Password Properties “password.cpl”
Performance Monitor “perfmon.msc”
Performance Monitor “perfmon”
Phone and Modem Options “telephon.cpl”
Power Configuration “powercfg.cpl”
Printers and Faxes “control printers”
Printers Folder “printers”
Private Character Editor “eudcedit”
Quicktime (If Installed) “QuickTime.cpl”
Regional Settings “intl.cpl”
Registry Editor “regedit”
Registry Editor “regedit32″
Remote Desktop “mstsc”
Removable Storage “ntmsmgr.msc”
Removable Storage Operator Requests “ntmsoprq.msc”
Resultant Set of Policy (XP Prof) “rsop.msc”
Scanners and Cameras “sticpl.cpl”
Scheduled Tasks “control schedtasks”
Security Center “wscui.cpl”
Services “services.msc”
Shared Folders “fsmgmt.msc”
Shuts Down W*NDOW$ “shutdown”
Sounds and Audio “mmsys.cpl”
Spider Solitare Card Game “spider”
SQL Client Configuration “cliconfg”
System Configuration Editor “sysedit”
System Configuration Utility “sconfig”
System File Checker Utility (Scan Immediately) “sfc /scannow”
System File Checker Utility (Scan Once At Next Boot) “sfc /scanonce”
System File Checker Utility (Scan On Every Boot) “sfc /scanboot”
System File Checker Utility (Return to Default Setting) “sfc /revert”
System File Checker Utility (Purge File Cache) “sfc /purgecache”
System File Checker Utility (Set Cache Size to size x) “sfc /cachesize=x”
System Properties “sysdm.cpl”
Task Manager “taskmgr”
Telnet Client “telnet”
User Account Management “nusrmgr.cpl”
Utility Manager “utilman”
W*NDOW$ Firewall “firewall.cpl”
W*NDOW$ Magnifier “magnify”
W*NDOW$ Management Infrastructure “wmimgmt.msc”
W*NDOW$ System Security Tool “syskey”
W*NDOW$ Update Launches “wupdmgr”
W*NDOW$ XP Tour Wizard “tourstart”
Wordpad “write”