MowGreen

An update is available that improves the compatibility and reliability of Windows Vista
http://support.microsoft.com/kb/938194

Working with other MVPs, we have discovered that the update appears to install properly and is repeatedly reoffered after installing it.
The issue is that one of the Packages containing a Component update, in this case, WindowsCalendar, fails to install due to there being no WindowsCalendar folder present in Scheduled Tasks.
The WindowsCalendar folder had been deleted.

The result is the Package fails to install, thus the Components of this Package are rolled back.
The other Packages of the Update do install, thus, the Update is reoffered.

Workaround:

Open Task Scheduler, and in the Windows folder
add a WindowsCalendar folder.
No task has to be assigned, just create the WindowsCalendar folder.
Install KB938194 now.

Moral of the story: Don't delete any folders in the Windows folder of Scheduled Tasks.

NOTE: The above scenario dealt with one Component of Vista. There may be other Components that the Package can not update. To view a verbose log of Component Based Servicing [CBS], open the cbs.log located in

%windir%\logs\CBS\cbs.log

The below is where we found that the update was failing to install due to the WindowsCalendar being deleted from Scheduled Tasks:

2007-09-05 03:06:59, Info CSI 000000c1 Begin executing advanced installer phase 32 (0x00000020) index 80 (0x00000050)
(sequence 113) Old component: Microsoft-Windows-Calendar, Version =
6.0.6000.16386, pA = PROCESSOR_ARCHITECTURE_INTEL (0), Culture neutral, VersionScope = 1 nonSxS, PublicKeyToken = {l:8 b:31bf3856ad364e35}, Type neutral, TypeName neutral, PublicKey neutral New component: Microsoft-Windows-Calendar, Version =
6.0.6000.16513, pA = PROCESSOR_ARCHITECTURE_INTEL (0), Culture neutral, VersionScope = 1 nonSxS, PublicKeyToken = {l:8 b:31bf3856ad364e35}, Type neutral, TypeName neutral, PublicKey neutral Install mode: install Installer ID: {4f9da785-7ffc-4a7d-9e7e-b1a67ad8b508} Installer name: [12]"Directory SD"
2007-09-05 03:06:59, Info CSI
00000143@2007/9/4:17:06:59.602 CMIADAPTER: Starting install...

2007-09-05 03:06:59, Info CSI
00000144@2007/9/4:17:06:59.617 CMIADAPTER: Invoking AI for install...

2007-09-05 03:06:59, Info CSI
00000145@2007/9/4:17:06:59.617 [194]"Applying ACL
D:P(A;CI;FA;;;BA)(A;OI;FRFWSDWDWO;;;BA)(A;CI;FA;;;SY)(A;OI;FRFWSDWDWO;;;SY)( A; CI;FW;;;AU)(A;OICIIO;FA;;;CO) to directory
"C:\Windows\system32\Tasks\Microsoft\Windows\WindowsCalendar\"

2007-09-05 03:06:59, Error CSI
00000146@2007/9/4:17:06:59.617 (F) [47]"SetNamedSecurityInfo (DACL and SACL) failed (2)" [gle=0x80004005]
2007-09-05 03:06:59, Error CSI
00000147@2007/9/4:17:06:59.617 (F) CMIADAPTER: Inner Error Message from AI HRESULT = HRESULT_FROM_WIN32(ERROR_FILE_NOT_FOUND) [ [44]"The system cannot find the file specified."] [gle=0x80004005]

2007-09-05 03:06:59, Error CSI
00000148@2007/9/4:17:06:59.617 (F) CMIADAPTER: AI failed. HRESULT = HRESULT_FROM_WIN32(ERROR_FILE_NOT_FOUND) Element: [94]"securityDescriptor xmlns="urn:schemas-microsoft-com:asm.v3" name="WindowsCalendarTasksACL" " [gle=0x80004005]
2007-09-05 03:06:59, Error CSI
00000149@2007/9/4:17:06:59.617 (F) CMIADAPTER: Exiting with HRESULT code = HRESULT_FROM_WIN32(ERROR_FILE_NOT_FOUND). [gle=0x80004005]
2007-09-05 03:06:59, Info CSI
000000c2@2007/9/4:17:06:59.617 CSI Advanced installer perf trace: CSIPERF:AIDONE;{4f9da785-7ffc-4a7d-9e7e-b1a67ad8b508};Microsoft-Windows- Calendar, Version = 6.0.6000.16513, pA = PROCESSOR_ARCHITECTURE_INTEL (0), Culture neutral, VersionScope = 1 nonSxS, PublicKeyToken = {l:8 b:31bf3856ad364e35}, Type neutral, TypeName neutral, PublicKey neutral;23541

2007-09-05 03:06:59, Error CSI 000000c3 (F) Failed execution of queue item Installer: Directory SD
({4f9da785-7ffc-4a7d-9e7e-b1a67ad8b508}) with HRESULT HRESULT_FROM_WIN32(ERROR_FILE_NOT_FOUND). Failure will not be ignored: A rollback will be initiated after all the operations in the installer queue are completed; installer is reliable (2)[gle=0x80004005]
2007-09-05 03:07:17, Info CSI 000000c4 End executing advanced installer (sequence 113) Completion status:

HRESULT_FROM_WIN32(ERROR_ADVANCED_INSTALLER_FAILED)

EDIT: 9/18 - Another successful workaround for this update was posted by NexusAnarchy in the MS WIndows Update newsgroup:

I resolved this issue by checking the cbs.log file and discovering that the install procedure was throwing up a PATH_NOT_FOUND error for the following folder:

C:\ProgramData\Microsoft\Network\Connections\Pbk\

I created an empty folder in that location, re-applied KB938194, rebooted,
and it now reports a succesful installation. I re-check the cbs.log file and
there are no new errors, and all exit conditions report OK.

That folder seems to be related to the Microsoft RAS service, for storage of
Public Keys. Nothing was created in the folder after my successful install -
so it would appear that the test to see if that path exists is falling over.