Windows update log problem in 1607

In Can't install Windows 10 Anniversary update, stuck on build 10240 @dalchina advised...

You could try reading the Windows update log...
https://support.microsoft.com/en-gb/kb/902093

...which is good advice for the OP who was on 12040. However, being curious (and not having needed to look at it before) I thought I'd have a look at mine.

I'm on Windows 10 Home Build 14393.187. Apparently since the Anniversary Update 1607 the only thing C:\Windows\WindowsUpdate.log contains is...

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.

For more information, please visit http://go.microsoft.com/fwlink/?LinkId=518345

So I followed the instructions and generated a WindowsUpdate.log on my Desktop - all well so far. Opening it revealed 99% of the entries were of the form:

1601/01/01 00:00:00.0000000 988 5532 Unknown( 10): GUID=638e22b1-a858-3f40-8a43-af2c2ff651a4 (No Format Information found).

Apparently, according to the above 'for more information...' link...

Notes

• If you encounter problems decoding the Windows Update log (for example, if you have multiple "GUID" entries that are displayed in the final text log), you may have to delete and then update your symbol cache. You can do this by deleting everything under the %temp%\windowsupdatelog folder.
• Decoding the ETL files and converting them into a single textual log file requires access to the Microsoft public symbol server on the Internet. If you have Internet access, no other action is required, the powershell cmdlet will automatically download the files needed for the conversion.
• The first time that you run the Get-WindowsUpdateLog cmdlet, you may see the Microsoft Internet Symbol Store dialog box. To use the Get-WindowsUpdateLog cmdlet, you must accept the presented license terms to enable access to the public symbols that are used by the cmdlet.

No matter how many times I clear %temp%\windowsupdatelog I never see the Microsoft Internet Symbol Store dialog box and never get a properly decoded update log. Has anyone ever got this to work? If so, what am I doing wrong? I currently don't need to see it to debug problems, but it would be nice to know it's there if I need it.

PS: I don't have (or want) a Microsoft Account, could that be the issue?

I think a better subject is needed for this thread because I don't know how many, including myself, will really understand what "W" is for.

Bree said:

fixed now.