AEM has received a bad URL request while listening for Vista/CEIP clients.
While listening for Vista error reports or CEIP reports, AEM received an invalid URL request. This can happen due to several reasons. For instance, it can happen if there has been a security threat or the protocol has changed between Vista/CEIP clients and AEM.
The alert is a warning to notify that an invalid URL request has been received by AEM. If this happens repeatedly, please contact Microsoft Customer Service and Support.