Update error-0xa8b-resolve-dns-fail.md

Edit review per CI 7435

Author: przlplx

support/windows-server/active-directory/error-0xa8b-resolve-dns-fail.md

@@ -1,6 +1,6 @@
 ---
 title: An Attempt to Resolve the DNS Name of a DC in the Domain Being Joined Has Failed
-description: Provides troubleshooting steps for resolving the Domain Name System (DNS) error code 0xa8b when you join a workgroup computer to a domain.
+description: Provides troubleshooting steps to resolve the Domain Name System (DNS) error code 0xa8b when you join a workgroup computer to a domain.
 ms.date: 03/26/2025
 manager: dcscontentpm
 audience: itpro
@@ -12,9 +12,9 @@ ms.custom:
 appliesto:
   - <a href=https://learn.microsoft.com/windows/release-health/windows-server-release-info target=_blank>Supported versions of Windows Server</a>
 ---
-# Error code 0xa8b: An attempt to resolve the DNS name of a DC in the domain being joined has failed
+# Error code 0xa8b: "An attempt to resolve the DNS name of a DC in the domain being joined has failed"
 
-This article provides troubleshooting steps for resolving the Domain Name System (DNS) error code 0xa8b when you join a workgroup computer to a domain. It includes causes and resolutions for common DNS issues.
+This article provides troubleshooting steps to resolve the Domain Name System (DNS) error code 0xa8b when you join a workgroup computer to a domain. It includes causes and resolutions for common DNS issues.
 
 When you join a workgroup computer to a domain, you receive the following error message:
 
@@ -38,41 +38,45 @@ Here's more information about the error code:
 
 This error occurs for one or more of the following reasons:
 
-- The workgroup computer being joined points to an invalid DNS server.
-- The DNS server used by the joining computer is invalid, is missing the required zones, or is missing the required records for the target domain.
+- The workgroup computer that's being joined points to an invalid DNS server.
+- The DNS server that's used by the joining computer is invalid, is missing the required zones, or is missing the required records for the target domain.
 - The target Active Directory (AD) domain contains a problematic DNS name.
-- Network problems exist on the workgroup computer, the target domain controller (DC), or the network used to connect the client and target DC.
+- Network problems exist on the workgroup computer, the target domain controller (DC), or the network that's used to connect the client and target DC.
 
 ## Troubleshooting steps
 
 To resolve this error, follow these steps:
 
-1. Verify that the computer being joined points to valid DNS server IP addresses. Invalid examples include:
+1. Verify that the computer that's being joined points to valid DNS server IP addresses. Invalid examples include:
 
-    - Invalid Internet Service Provider (ISP)-provided DNS servers.
-    - ISP-provided DNS servers that don't host the AD domain zone.
-    - A stale or nonexistent DNS server on the corporate intranet.
-    - A corporate network DNS server that doesn't host the AD domain zone.
-    - A corporate network DNS server in an error state that prevents it from loading the `_msdcs.<forest root domain>` or target AD domain zones, or from resolving queries for those zones. Event ID 4521 might be logged.
+    - Invalid Internet Service Provider (ISP)-provided DNS servers
+    - ISP-provided DNS servers that don't host the AD domain zone
+    - A stale or nonexistent DNS server on the corporate intranet
+    - A corporate network DNS server that doesn't host the AD domain zone
+    - A corporate network DNS server in an error state that prevents it from loading the `_msdcs.<forest root domain>` or target AD domain zones, or from resolving queries for those zones (Event ID 4521 might be logged)
 
-2. Verify that all DNS servers configured on the client host the required zones and valid records for a DC in the target domain. Check for the following misconfigurations:
+2. Verify that all DNS servers that are configured on the client are hosting the required zones and valid records for a DC in the target domain. Check for the following misconfigurations:
 
-    - Forward lookup zone for the target AD domain is missing.
+    - The forward lookup zone for the target AD domain is missing.
     - The `_msdcs` forward lookup zone is missing.
     - The `_msdcs.<forest root domain>` zone doesn't contain a Lightweight Directory Access Protocol (LDAP) SRV record for a DC in the target domain.
     - The host A record is missing from the target AD domain zone.
-    - The host A record is present but contains the wrong IP address for the target DC.
-    - The host A record is present but is registered by a network interface that isn't accessible to the client computer.
+    - The host A record exists but contains the wrong IP address for the target DC.
+    - The host A record exists but is registered by a network interface that isn't accessible to the client computer.
 
-3. Check for special names in the target Active Directory domain that require other configuration:
+3. Check for special names in the target AD domain that require other configuration:
 
-    - Single-label DNS name. For more information, see [Deployment and operation of Active Directory domains that are configured by using single-label DNS names](deployment-operation-ad-domains.md#how-to-enable-windows-based-clients-to-send-queries-and-dynamic-updates-when-using-single-label-dns-zones).
+    - Single-label DNS name. For more information, see [Deployment and operation of Active Directory domains that are configured by using single-label DNS names](deployment-operation-ad-domains.md#how-to-enable-windows-based-clients-to-do-queries-and-dynamic-updates-with-single-label-dns-zones).  
     - Disjoint namespace. For more information, see [Event IDs 5788 and 5789 occur on a Windows-based computer](event-ids-5788-5789.md).
     - All numeric top-level domains (TLDs) or TLDs containing numeric characters.
 
-4. Check for network problems on the workgroup computer, target DC, or the network connecting the computer and the target DC:
+4. Check for network problems on the workgroup computer, target DC, or the network that connects the computer and the target DC. Check specifically for:
 
-    - A broken Network Interface Card (NIC)  on the client computer or the target DC.
-    - A broken network link.
+    - A broken network adapter on the client computer or the target DC
+    - A broken network link
 
-You can use tools like [nslookup](/windows-server/administration/windows-commands/nslookup) to verify the availability and content of DNS records from the client end, and use tools like [ping](/windows-server/administration/windows-commands/ping) or [tracert](/windows-server/administration/windows-commands/tracert) to check the reachability of IP addresses. You can use [PortQry](../networking/portqry-command-line-port-scanner-v2.md) to try specific DC UDP and TCP server ports. A starting point for DC server ports is to [Configure a firewall for AD domains and trusts](config-firewall-for-ad-domains-and-trusts.md).
+The following tools, and similar tools, are available to run various searches:
+
+- [Nslookup](/windows-server/administration/windows-commands/nslookup) to verify the availability and content of DNS records from the client end.
+- [Ping](/windows-server/administration/windows-commands/ping) or [tracert](/windows-server/administration/windows-commands/tracert) to check the reachability of IP addresses.
+- [PortQry](../networking/portqry-command-line-port-scanner-v2.md) to try specific DC UDP and TCP server ports. A starting point for DC server ports is to [configure a firewall for AD domains and trusts](config-firewall-for-ad-domains-and-trusts.md).