The server failed to load application '/LM/W3SVC/1/ROOT'. The error was 'Class not registered'.

If these errors are occuring while running the .asp pages then below is the fix that will make things working for you.

1. Error as displayed in the browser: The server failed to load application. Check Eventlog for more details.

2. System log in the eventvwr - W3SVC: The server failed to load application '/LM/W3SVC/1/ROOT'. The error was 'Class not registered'.

3. Event Viewer Application Log for MSDTC CLIENT
Event Type: Error
Event Source: MSDTC Client
Event Category: (10)
Event ID: 4427
Description:
Failed to initialize the needed name objects. Error Specifics: d:\comxp_sp3\com\com1x\dtc\dtc\msdtcprx\src\dtcinit.cpp:215, Pid: 2536
No Callstack,
CmdLine: C:\WINDOWS\System32\dllhost.exe /Processid:{xxxx}

4. Component Services -> COM+ in MMC, it will throw error.

This means that COM+ on your system is corrupted and it is not able to communicate with msdtc. Also it is not able to get to the IIS Components/Packages in your COM+.

Solution
1. Fix MSDTC:

a. Go to the command prompt
b. Change directory to C:\%windir%\system32
c. Type: msdtc -uninstall
d. Restart PC
e. Go to the command prompt
f. Change directory to C:\%windir%\system32
g. Type: msdtc -install

2. After, msdtc is installed (Component Services -> COM+ in MMC will not throw any errors). Delete and re-register IIS Components/Packages in the COM+ by following the below steps:

IIS related package in Component Services MMC
1. IIS In-Process Applications
2. IIS Out-of-Process Pooled Applications
3. IIS Utilities

Steps
a. In the Command Prompt, go to %windir%\system32\inetsrv folder
and run >rundll32 wamreg.dll, CreateIISPackage command

b. run >regsvr32 asptxn.dll

c. Then reset IIS using iisreset command, then re-open Component Services MMC to verfiy the IIS Components/Packages are recreated.

The above steps should make your .asp pages render properly!!!!!