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Event ID: 1033 Source: MSExchange ActiveSync
|Source: MSExchange ActiveSync|
The setting ExternalProxy in the Web.Config file was not valid. The previous value was null and has been changed to.
[Name] MSExchange ActiveSync
- Event ID 1033
|English: Request a translation of the event description in plain English.|
According to TB218026, this event indicates that the value specified for the Internet Information Services (IIS) setting referenced in the event description is not valid. See the article on how to to manually change the settings to the default settings.
From a Microsoft support engineer: "If this is not a partner-hosted environment, you can safely ignore this error. It is simply a warning that the ExternalProxy setting is not set in the web.config. We use a default value of null when we find this.
If you are not partner hosted and want to get rid of the warning, add a key under the <appSettings> key in your \Program Files\Microsoft\Exchange Server\V14\ClientAccess\Sync\web.config file:
<add key="ExternalProxy" value=""></add>
The warning should have only been appearing when the application pool was recycled and just spinning up. You will need to either recylce the MSExchangeSyncAppPool or do an iisreset and then check your application log. You should no longer see the event."
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