Windows Update issues - Windows 10

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L3 Networker

Windows Update issues - Windows 10

I am currently troubleshooting an issue on PAN-OS 8.0.4 regarding the ability for Windows 10 / Windows Server 2016 to update via Windows Update.  Windows Update for Windows 7 is working fine, however any time I try to download updates on Windows 10 (Creators Update) it fails unless i add a the subnets below to exclude them from decryption.  As the App-ID ms-update does not decrypt by default, I'm wondering if there has been a change in data stream which is causing some Windows Update traffic to be identified as ssl rather than ms-update.  

 

Subnets excluded to get this to work: 64.4.0.0/18, 65.52.0.0/14

 

X.X.X.X-->64.4.54.18 76370000... 169 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
X.X.X.X-->65.55.252.202 59010000... 209 TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA

 

Has anyone else seen this issue as of recently?  I am trying to avoid opening up these entire subnets.

 

- Matt

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L2 Linker

Re: Windows Update issues - Windows 10

Perhaps this was fixed in 8.0.5

 

There is a fix listed

 

PAN-77171

Fixed an issue where the firewall discarded sessions that required the TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 cipher for SSL decryption

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L1 Bithead

Re: Windows Update issues - Windows 10

Add these url`s to no-decrypt:

 

*.mp.microsoft.com/
*.microsoft.com
fe2.w2.microsoft.com

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