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Cannot open serial port on Windows 2008 R2 - Connect IT Community | Kaseya
<main> <article class="userContent"> <p>KB#: KKB000792</p> <p> </p> <p>QUESTION</p> <p>Cannot open serial port on Windows 2008 R2</p> <p> </p> <p>ANSWER</p> <p>Windows 2008 R2 is restricting the use of serial ports by services by requiring that the service account has the "Create a token object" user right assigned. A reboot of the KNM service may be required after assigned the user right.</p> <p>The serial port is used by KNM when an locally connected GSM modem is connected to the KNM host machine and used to send SMS.</p> <p> </p> <p>APPLIES TO</p> <p>Kaseya Network Monitor, KNM</p> </article> </main>