* Site Recovery Manager (SRM) or vSphere Replication (VR) plugin in vCenter ( VC) reads "UI error: Unknown error"
* On accessing the /dr URL page manually we receive browser error ie: https://Appliance_FQDN/dr , https://x.x.x.x/dr
"upstream connect error or disconnect/reset before headers. reset reason: connection failure, transport failure reason: delayed connect error: 111"
vSphere Replication and Site Recovery Manger 8.x
The appliance dr-client service is hung or stopped.
Launch Site Recovery Manager (SRM) or vSphere Replication (VR) Manager VAMI 5480 page
Navigate to Services Tab
Restart the dr-client service