Merge branch 'master' into updateBoBDocumentation

Author: isaiah-mayerchak

exchange/docs-conceptual/app-only-auth-powershell-v2.md

@@ -207,7 +207,7 @@ Create a self-signed x.509 certificate using one of the following methods:
 
 ## Step 4: Attach the certificate to the Azure AD application
 
-After you register the certificate with your application, you can use the public key (`.pfx` file) or the thumbprint for authentication.
+After you register the certificate with your application, you can use the private key (`.pfx` file) or the thumbprint for authentication.
 
 1. On the **Apps registration** page from the end of [Step 2](#step-2-assign-api-permissions-to-the-application), select your application.
 

exchange/exchange-ps/exchange/Get-MessageTrace.md

@@ -46,7 +46,7 @@ If you enter a start date that is older than 10 days, you will receive an error
 
 To search for message data that is greater than 10 days old, use the Start-HistoricalSearch and Get-HistoricalSearch cmdlets.
 
-This cmdlet returns a maximum of 1000000 results, and will timeout on very large queries. If your query returns too many results, consider splitting it up using smaller StartDate and EndDate intervals.
+By default, this cmdlet returns a maximum of 1000 results, and will timeout on very large queries. If your query returns too many results, consider splitting it up using smaller StartDate and EndDate intervals.
 
 You need to be assigned permissions before you can run this cmdlet. Although this topic lists all parameters for the cmdlet, you may not have access to some parameters if they're not included in the permissions assigned to you. To find the permissions required to run any cmdlet or parameter in your organization, see [Find the permissions required to run any Exchange cmdlet](https://docs.microsoft.com/powershell/exchange/find-exchange-cmdlet-permissions).
 

exchange/exchange-ps/exchange/Set-ExternalInOutlook.md

@@ -105,6 +105,8 @@ The Enabled parameter enables or disables external sender identification in supp
 - $true: External sender identification in Outlook is enabled. An External icon is added in the area of the subject line of messages from external senders. To exempt specific senders or sender domains from this identification, use the AllowList parameter.
 - $false: External sender identification in Outlook is disabled.
 
+After an admin enables this setting, it can take between 24 and 48 hours for users to see the External icon in messages from external senders in supported versions of Outlook.
+
 ```yaml
 Type: System.Boolean
 Parameter Sets: (All)