https://community.dynatrace.com/t5/Troubleshooting/Network-slows-down-or-disrupts-on-Windows-with-installed-npcap/ta-p/265115 <DIV class="lia-message-template-content-zone"> <H1><STRONG>Problem</STRONG></H1> <P>Network slows down or disrupts on Windows with installed npcap.</P> <H1><STRONG>Resolution</STRONG></H1> <P>This problem is related with interaction of npcap&nbsp; network filtering driver with virtual vmxnet3 network adapter. Older version of npcap driver ( &lt; 1.79) causes network slow down or even network connections disruption when "vmxnet3 network adapter" is present on host. If you observe such behavior, please check installed npcap version and upgrade npcap to version at least 1.79.&nbsp; This problem mostly concerns hosts where OA reuses npcap which had been installed previously.&nbsp; OA installs npcap in version 1.79 which should interact correctly with&nbsp;vmxnet3 network adapter. For example, it might break network communication during VMtools update:&nbsp;<A href="https://community.dynatrace.com/t5/Open-Q-A/Problem-with-VMWare-Tools/m-p/230330" target="_blank" rel="noopener">https://community.dynatrace.com/t5/Open-Q-A/Problem-with-VMWare-Tools/m-p/230330</A></P> <HR /></DIV> Wed, 09 Jul 2025 14:48:18 GMT pawel_stenka 2025-07-09T14:48:18Z https://community.dynatrace.com/t5/Troubleshooting/Network-slows-down-or-disrupts-on-Windows-with-installed-npcap/ta-p/265115 <DIV class="lia-message-template-content-zone"> <H1><STRONG>Problem</STRONG></H1> <P>Network slows down or disrupts on Windows with installed npcap.</P> <H1><STRONG>Resolution</STRONG></H1> <P>This problem is related with interaction of npcap&nbsp; network filtering driver with virtual vmxnet3 network adapter. Older version of npcap driver ( &lt; 1.79) causes network slow down or even network connections disruption when "vmxnet3 network adapter" is present on host. If you observe such behavior, please check installed npcap version and upgrade npcap to version at least 1.79.&nbsp; This problem mostly concerns hosts where OA reuses npcap which had been installed previously.&nbsp; OA installs npcap in version 1.79 which should interact correctly with&nbsp;vmxnet3 network adapter. For example, it might break network communication during VMtools update:&nbsp;<A href="https://community.dynatrace.com/t5/Open-Q-A/Problem-with-VMWare-Tools/m-p/230330" target="_blank" rel="noopener">https://community.dynatrace.com/t5/Open-Q-A/Problem-with-VMWare-Tools/m-p/230330</A></P> <HR /></DIV> Wed, 09 Jul 2025 14:48:18 GMT https://community.dynatrace.com/t5/Troubleshooting/Network-slows-down-or-disrupts-on-Windows-with-installed-npcap/ta-p/265115 pawel_stenka 2025-07-09T14:48:18Z