Symptoms

Start menu not working for all users

System Event log shows the following error

EventID:10001 – Source: DCOM

Unable to start a DCOM Server: Microsoft.Windows.Cortana_1.11.6.17763_neutral_neutral_cw5n1h2txyewy!CortanaUI.AppXynb3eakad12451rv00qxextfnce9sxb8.mca as Unavailable/Unavailable. The error:

“0”

Happened while starting this command:

“C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe” -ServerName:CortanaUI.AppXa50dqqa5gqv4a428c9y1jjw7m3btvepj.mca

Fix

Backup registry key below (could take awhile 1 hr+)

In powershell

Remove-Item “HKLM:\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\RestrictedServices\AppIso\FirewallRules”

New-Item “HKLM:\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\RestrictedServices\AppIso\FirewallRules”

Set DWORD “DeleteUserAppContainersOnLogoff = 1
in HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy