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mbotham75
Beginner

AnyConnect interrupts Windows Cumulative Update Install

Hi, I'm posting this to see if anyone is having a similar experience. We have 1500+ clients running on VPN with a mixture of AnyConnect 4.8 and 4.9 installed. Over the last few months we have seen an issue where the roll out of the Microsoft Cumulative Updates fails on some of our end user devices. We have found that in some circumstances on those machines, if you disconnect the VPN before installing then the updates complete.

 

Our build team did some analysis on the windows logs and found that the update process is failing when there is a call to the SID of the ciscoacvpnuser - which is the restricted user installed on the device by AnyConnect.  The failures are not consistent however and we have seen the same device complete the updates at another point in time, the logs showing the call to the same account SID completes ok.

 

My belief is that the update process is failing as there is a resource conflict between it and the AnyConnect client and that this is an issue of timing rather than a bug in AC hence why it only fails sometimes. However as its causing an inconvenience to our userbase (people often have to run the update process 3-4 times to get it to work) I want to see if there is anything that can be investigated to prove that assumption.

 

I would greatly appreciate any response if people have seen similar issues on their network.

 

Thanks

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