Windows Update koristi praćenje događaja za Windows (ETW)^{(Event Tracing for Windows (ETW))} za generiranje dijagnostičkih dnevnika u Windows 11/10 i spremanje u formatu datoteke .etl . Razlog zašto je to učinjeno je taj što smanjuje korištenje prostora na disku, kao i poboljšava performanse.

Jedna od posljedica ove metode je da zapisnici Windows Update nisu odmah čitljivi. Morate dekodirati .etl datoteku, što je format u kojem se ti zapisnici spremaju.

Pročitajte zapise Windows Update u ^{(Windows Update)}Windows 11/10

Za čitanje dnevnika Windows Update u ^{(Windows Update)}Windows 11/10 , Microsoft predlaže sljedeću metodu:

1. Preuzmite Windows Symbol Package i instalirajte ih koristeći metodu opisanu ovdje^(here) . Instalirajte ove simbole da kažete, C: simboli.
2. Preuzmite alat Tracefmt .exe^{(.exe tool)} slijedeći upute ovdje^(here) . Tracefmt ( Tracefmt.exe ) je alat naredbenog retka koji formatira i prikazuje poruke praćenja iz datoteke zapisnika praćenja događaja ( .etl ) ili sesije praćenja u stvarnom vremenu. Tracefmt može prikazati poruke u prozoru naredbenog retka^{(Command Prompt)} ili ih spremiti u tekstualnu datoteku.

Sada otvorite naredbeni redak s administrativnim pravima i stvorite privremenu mapu pod nazivom %systemdrive%WULogs. Sada kopirajte Tracefmt.exe u ovaj direktorij.

Sada pokrenite^(Run) sljedeće naredbe jednu za drugom:

cd /d %systemdrive%\WULogs

copy %windir%\Logs\WindowsUpdate\* %systemdrive%\WULogs\

tracefmt.exe -o windowsupate.log <each windows update log delimited by space> -r c:\Symbols

Metoda izgleda zamorno i Microsoft je obećao da će poboljšati stvari u konačnoj verziji Windowsa 10^{(Windows 10)} . Sve^(Full) pojedinosti možete pronaći na KB3036646 .

AŽURIRANJE:^(UPDATE:) Pa stvari su se sada poboljšale u Windows 11/10 .

Koristite PowerShell^{(Use PowerShell)} za čitanje dnevnika Windows Update

WindowsUpdate.log se još uvijek nalazi u C:Windows, međutim, kada otvorite datoteku C:\Windows\WindowsUpdate.log , vidjet ćete samo sljedeće informacije:

Windows Update logs are now generated using ETW (Event Tracing for Windows). Please run the Get-WindowsUpdateLog PowerShell command to convert ETW traces into a readable WindowsUpdate.log.

Da biste pročitali WindowsUpdate.log u sustavu Windows 10^{(Windows 10)} , morat ćete koristiti Windows PowerShell cmdlet za ponovno stvaranje WindowsUpdate.log na način na koji ga inače gledamo.

Stoga otvorite prozor PowerShell , upišite ^(PowerShell)Get-WindowsUpdateLog i pritisnite Enter.

Pročitajte sljedeće^{(Read next)} : Gdje potražiti povijest ažuriranja sustava Windows .

Where to find and How to read Windows Update log in Windows 11/10

Windows Update uses Event Tracing for Windows (ETW) to generate diagnostic logs in Windows 11/10, and save them in the .etl file format. The reason why this has been done is that it reduces disk space usage as well as improves performance.

One fallout of this method is that the Windows Update logs are not immediately readable. You need to decode the .etl file, which is the format these logs are saved in.

Read Windows Update logs in Windows 11/10

To read the Windows Update logs in Windows 11/10, Microsoft suggests the following method:

1. Download Windows Symbol Package and install them using the method outlined here. Install these symbols to say, C:\symbols.
2. Download Tracefmt.exe tool by following the instructions here. Tracefmt (Tracefmt.exe) is a command-line tool that formats and displays trace messages from an event trace log file (.etl) or a real-time trace session. Tracefmt can display the messages in the Command Prompt window or save them in a text file.

Now open a command prompt with administrative rights and create a temporary folder, named %systemdrive%\WULogs. Now copy Tracefmt.exe to this directory.

Now, Run the following commands one after the other:

cd /d %systemdrive%\WULogs

copy %windir%\Logs\WindowsUpdate\* %systemdrive%\WULogs\

tracefmt.exe -o windowsupate.log <each windows update log delimited by space> -r c:\Symbols

The method does look tedious and Microsoft has promised that they would improve things, in the final version of Windows 10. Full details can be found at KB3036646.

UPDATE: Well things have improved in Windows 11/10 now.

Use PowerShell to read Windows Update logs

The WindowsUpdate.log is still located in C:\Windows, however, when you open the file C:\Windows\WindowsUpdate.log, you will only see the following information:

Windows Update logs are now generated using ETW (Event Tracing for Windows). Please run the Get-WindowsUpdateLog PowerShell command to convert ETW traces into a readable WindowsUpdate.log.

In order to read the WindowsUpdate.log in Windows 10, you will need to use Windows PowerShell cmdlet to re-create the WindowsUpdate.log the way we normally view it.

So open a PowerShell window, type Get-WindowsUpdateLog and hit Enter.

Read next: Where to look for your Windows Update History.

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