how to find all placeholders in MV of Azure AD Connect?

Import-Module "C:\Program Files\Microsoft Azure Active Directory Connect\Tools\AdSyncTools.psm1"

Export-ADSyncToolsAadDisconnectors

0x80040e14 during Azure ADConnect upgrade

During upgrade Azure ADConnect to Entra AD Connect 2.3.8.0 we've received 0x80040e14 error. At first we had an idea that it's connected with permission or communication limitation on firewall, after quick search possible reasons:

missing column

or not enough memory for sql

For us it's near not enough memory reason, but we have still SQL Express, so during upgrade there is no place for finishing upgrade (limit 10GB for database size). We must find if we have any not needed objects to remove them from Azure or to move to full SQL server.

terminal services license types - tslic

A02-5.00-S - Windows 2000 TS temporary or permanent CAL
A02-5.02-S - Windows 2003 TS temporary or permanent CAT
A02-5.00-EX - Windows 2000 TS CAL from the built-in pool
C50-6.02-S - Windows 2012 or Windows 2012r2
C50-6.00-S - Windows 2008 or Windows 2008r2
C50-10.00-S - ?
C50-10.01-S - ?
C50-10.02-S - ?

tsctst utility

msTSLicenseVersion - 655360
msTSLicenseVersion2 - 7
msTSLicenseVersion3 - C50-10.00-S
msTSLicenseVersion4 - (empty/null at my environment)
msTSMangingLS - server with licensing service installed - source of license - like xxxxx-xxxxx-xxxxx-xxxxx

default ttl dns records on Windows

The 20 minute TTL is default with self update

The default of 20 minutes - set by DWORD named DefaultRegistrationTTL in HKLM\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters (the value should be in seconds). A reboot or ipconfig /registerdns.