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When configuring the WEF source, Stream shows the source as working, but the Windows Event Forwarding plugin event logs show: Error Event ID: 107 A subscription policy contains invalid configuration.

How do I overcome this error?

This is error is caused by a syntax mismatch when you configure the target subscription manager.

Cribl suggest using a GPO to do so by setting the Configure Target Subscription Manager Policy.

The most common cause of this error will be missing the “Server=“ that prepends the FQDN or IP being used in the policy.

Use the following syntax when using the HTTPS protocol:

Server=

It will look like this when correct:

Server=https://mycriblserver1.xxxxxxxxx.Xxxx.local:5986/wsman/SubscriptionManager/WEC,Refresh=60,IssuerCA=#######

It will look something like the below when incorrect, and will most likely be missing the “Server=“ from the string.

https://mycriblserver1.xxxxxxxxx.Xxxx.local:5986/wsman/SubscriptionManager/WEC,Refresh=60,IssuerCA=#######https://:5986/wsman/SubscriptionManager/WEC,Refresh=,IssuerCA


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