diff --git a/windows/security/identity-protection/credential-guard/credential-guard-known-issues.md b/windows/security/identity-protection/credential-guard/credential-guard-known-issues.md
index 3599199593..7d71cc00ce 100644
--- a/windows/security/identity-protection/credential-guard/credential-guard-known-issues.md
+++ b/windows/security/identity-protection/credential-guard/credential-guard-known-issues.md
@@ -59,6 +59,10 @@ The following known issues have been fixed by servicing releases made available
 
 ## Known issues involving third-party applications
 
+The following issue affects MSCHAPv2:
+
+- [Credential guard doesn't work with MSCHAPv2 configurations, of which Cisco ISE is a very popular enterprise implementation](https://quickview.cloudapps.cisco.com/quickview/bug/CSCul55352).
+
 The following issue affects the Java GSS API. See the following Oracle bug database article: 
 
 - [JDK-8161921: Windows Defender Credential Guard doesn't allow sharing of TGT with Java](http://bugs.java.com/bugdatabase/view_bug.do?bug_id=8161921)
diff --git a/windows/security/identity-protection/hello-for-business/hello-errors-during-pin-creation.md b/windows/security/identity-protection/hello-for-business/hello-errors-during-pin-creation.md
index 72148e773a..4753b3c6f4 100644
--- a/windows/security/identity-protection/hello-for-business/hello-errors-during-pin-creation.md
+++ b/windows/security/identity-protection/hello-for-business/hello-errors-during-pin-creation.md
@@ -84,8 +84,9 @@ For errors listed in this table, contact Microsoft Support for assistance.
 
 | Hex         | Cause   |
 |-------------|---------|
-| 0X80072F0C  | Unknown |
 | 0x80070057  | Invalid parameter or argument is passed. |
+| 0X80072F0C  | Unknown |
+| 0x80072F8F  | A mismatch happens between the system's clock and the activation server's clock when attempting to activate Windows.|
 | 0x80090010  | NTE_PERM |
 | 0x80090020  | NTE\_FAIL |
 | 0x80090027  | Caller provided a wrong parameter. If third-party code receives this error, they must change their code. |
@@ -105,7 +106,6 @@ For errors listed in this table, contact Microsoft Support for assistance.
 | ​0x801C044C  | There is no core window for the current thread. |
 | 0x801c004D  | DSREG_NO_DEFAULT_ACCOUNT: NGC provisioning is unable to find the default WAM account to use to request AAD token for provisioning. Unable to enroll a device to use a PIN for login. |
 
-
 ## Related topics
 
 - [Windows Hello for Business](hello-identity-verification.md)