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Get-CalendarDiagnosticLog

Although this cmdlet is available in on-premises Exchange and in the cloud-based service, it only works in on-premises Exchange. In cloud-based service, use the Get-CalendarDiagnosticObjects cmdlet instead.

Use the Get-CalendarDiagnosticLog cmdlet to collect a range of calendar logs. The Calendar Diagnostic logs track all calendar items and meeting requests in mailboxes. You can use this information to troubleshoot calendar issues that occur in mailboxes.

For information about the parameter sets in the Syntax section below, see Exchange cmdlet syntax.

Syntax

Get-CalendarDiagnosticLog
   [-Identity] <MailboxIdParameter>
   -MeetingID <String>
   [-Credential <PSCredential>]
   [-DomainController <Fqdn>]
   [-LogLocation <String>]
   [-ReadFromDomainController]
   [-ResultSize <Unlimited>]
   [<CommonParameters>]
Get-CalendarDiagnosticLog
   [-Identity] <MailboxIdParameter>
   -Subject <String>
   [-Credential <PSCredential>]
   [-DomainController <Fqdn>]
   [-LogLocation <String>]
   [-ReadFromDomainController]
   [-ResultSize <Unlimited>]
   [<CommonParameters>]
Get-CalendarDiagnosticLog
   [-Identity] <MailboxIdParameter>
   -LogLocation <String>
   [-Credential <PSCredential>]
   [-DomainController <Fqdn>]
   [-EndDate <ExDateTime>]
   [-EntryId <String>]
   [-ExactMatch <Boolean>]
   [-ItemClass <String[]>]
   [-ItemIds <String[]>]
   [-Latest]
   [-MeetingID <String>]
   [-ReadFromDomainController]
   [-ResultSize <Unlimited>]
   [-StartDate <ExDateTime>]
   [-Subject <String>]
   [<CommonParameters>]

Description

The output of this cmdlet contains the following information:

  • IsFileLink: Indicates whether the calendar item has been exported to a .msg file by using the LogLocation parameter. Values are True or False.
  • Identity: Identifies the mailbox that holds the calendar item. An example value is: excallog://laura@contoso.com/?id=RgAAAACF/h/dHTTkQbdPrk7z+G4SBwCoatc7EmnEQq1iF35p17stAAAAAAFEAACoatc7EmnEQq1iF35p17stAAAAABEIAAAP.
  • LogDate: The date-time that the calendar item was logged.
  • NormalizedSubject: The Subject field of the calendar item.
  • CleanGlobalObjectId: The identifier that's constant throughout the lifetime of the calendar item. For example, 040000008200E00074C5B7101A82E00800000000B0225ABF0710C80100000000000000001000000005B27C05AA7C4646B0835D5EB4E41C55.

After you run the Get-CalendarDiagnosticLog cmdlet, you can analyze the calendar data using the Get-CalendarDiagnosticAnalysis cmdlet. For more information, see Get-CalendarDiagnosticAnalysis.

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.

Examples

Example 1

Get-CalendarDiagnosticLog -Identity "Shannon Steele" -Subject "Weekly development meeting" -ExactMatch $true

This example retrieves the Calendar Diagnostic log entries for Shannon Steele's mailbox by using the subject Weekly development meeting.

Example 2

Get-CalendarDiagnosticLog -Identity oevans -StartDate "6/1/2018 6:00:00 AM" -EndDate "6/30/2018 5:00:00 PM"

This example retrieves the Calendar Diagnostic log entries for Oscar Evans' mailbox from 6/1/2018 to 6/30/2018.

Example 3

Get-CalendarDiagnosticLog -Identity jkozma@contoso.com -Subject "Weekly development meeting" -Latest

This example retrieves the Calendar Diagnostic log data only for the most recent calendar item in Jasen Kozma's mailbox with a message subject of "Weekly development meeting".

Example 4

Get-CalendarDiagnosticLog -Identity "Jasen Kozma" -Subject "Budget Meeting" -ExactMatch $true -LogLocation "C:\My Documents\Calendar Diagnostic Export"

In Exchange 2013, this example exports all calendar items in the Calendar Diagnostic log for Jasen Kozma's mailbox that have "Budget Meeting" anywhere in the subject to the specified folder.

Notes:

  • In this example, the message files are written to C:\My Documents\Calendar Diagnostic Export\jkozma@contoso.com.
  • In on-premises Exchange organizations, you can use the Get-CalendarDiagnosticAnalysis cmdlet to analyze the exported .msg files.
  • This example doesn't work in Exchange 2016 or Exchange 2019 because the LogLocation parameter is not available.

Parameters

-Credential

This parameter is available only in on-premises Exchange.

The Credential parameter specifies the username and password that's used to run this command. Typically, you use this parameter in scripts or when you need to provide different credentials that have the required permissions.

A value for this parameter requires the Get-Credential cmdlet. To pause this command and receive a prompt for credentials, use the value (Get-Credential). Or, before you run this command, store the credentials in a variable (for example, $cred = Get-Credential) and then use the variable name ($cred) for this parameter. For more information, see Get-Credential.

Type:PSCredential
Position:Named
Default value:None
Required:False
Accept pipeline input:False
Accept wildcard characters:False
Applies to:Exchange Server 2010, Exchange Server 2013, Exchange Server 2016, Exchange Server 2019

-DomainController

This parameter is available only in on-premises Exchange.

The DomainController parameter specifies the domain controller that's used by this cmdlet to read data from or write data to Active Directory. You identify the domain controller by its fully qualified domain name (FQDN). For example, dc01.contoso.com.

Type:Fqdn
Position:Named
Default value:None
Required:False
Accept pipeline input:False
Accept wildcard characters:False
Applies to:Exchange Server 2010, Exchange Server 2013, Exchange Server 2016, Exchange Server 2019

-EndDate

The EndDate parameter specifies the end date of the date range.

Use the short date format that's defined in the Regional Options settings on the computer where you're running the command. For example, if the computer is configured to use the short date format MM/dd/yyyy, enter 09/01/2018 to specify September 1, 2018. You can enter the date only, or you can enter the date and time of day. If you enter the date and time of day, enclose the value in quotation marks ("), for example, "09/01/2018 5:00 PM".

Type:ExDateTime
Position:Named
Default value:None
Required:False
Accept pipeline input:False
Accept wildcard characters:False
Applies to:Exchange Server 2013, Exchange Server 2016, Exchange Server 2019, Exchange Online

-EntryId

The EntryId parameter filters the results by entry ID. You can specify multiple values separated by commas.

Type:String
Position:Named
Default value:None
Required:False
Accept pipeline input:False
Accept wildcard characters:False
Applies to:Exchange Server 2016, Exchange Server 2019, Exchange Online

-ExactMatch

The ExactMatch parameter specifies whether to use an exact match or a partial match for text values that you specify for the Subject parameter. Valid values are:

  • $true: The subject search uses an exact match and searches all calendar items in the mailbox. For example, if you search for "budget", the search looks for items that have "budget" anywhere in the subject, but not "budgeting".
  • $false: The subject search uses a partial match and searches a maximum of 1000 calendar items in the mailbox. For example, if you search for "budget", the search looks for items that have "budget" and "budgeting" anywhere in the subject. This is the default value.

A partial subject match search may not return all of the relevant calendar items. Try using an exact subject match search for more accurate results.

You only use this parameter with the Subject parameter.

The value of this parameter is ignored when you use the MeetingId parameter.

Type:Boolean
Position:Named
Default value:None
Required:False
Accept pipeline input:False
Accept wildcard characters:False
Applies to:Exchange Server 2016, Exchange Server 2019, Exchange Online

-Identity

The Identity parameter specifies the mailbox that contains the calendar items. You can use any value that uniquely identifies the mailbox. For example:

  • Name
  • Alias
  • Distinguished name (DN)
  • Canonical DN
  • Domain\Username
  • Email address
  • GUID
  • LegacyExchangeDN
  • SamAccountName
  • User ID or user principal name (UPN)
Type:MailboxIdParameter
Position:1
Default value:None
Required:True
Accept pipeline input:True
Accept wildcard characters:False
Applies to:Exchange Server 2010, Exchange Server 2013, Exchange Server 2016, Exchange Server 2019, Exchange Online

-ItemClass

The ItemClass parameter filters the results by the specified MessageClass property value of the calendar item (for example, IPM.Appointment). You can specify multiple values separated by commas.

You can only use this parameter with the MeetingID parameter.

Type:String[]
Position:Named
Default value:None
Required:False
Accept pipeline input:False
Accept wildcard characters:False
Applies to:Exchange Server 2016, Exchange Server 2019, Exchange Online

-ItemIds

The ItemIds parameter filters the results by item ID. You can specify multiple values separated by commas.

Type:String[]
Position:Named
Default value:None
Required:False
Accept pipeline input:False
Accept wildcard characters:False
Applies to:Exchange Server 2016, Exchange Server 2019, Exchange Online

-Latest

The Latest switch specifies whether to return calendar log data for only the most recent calendar item. You don't need to specify a value with this switch.

Type:SwitchParameter
Position:Named
Default value:None
Required:False
Accept pipeline input:False
Accept wildcard characters:False
Applies to:Exchange Server 2013, Exchange Server 2016, Exchange Server 2019, Exchange Online

-LogLocation

Note: This parameter was removed from Exchange 2016 and Exchange 2019 by the 2022 H1 Cumulative Updates because it accepts UNC path values. Usage of this cmdlet is now restricted to the local server.

This parameter is functional only in Exchange 2010 and Exchange 2013.

The LogLocation parameter specifies the location to export the calendar items to .msg files. You can specify a local path, or a UNC path (\\Server\Share). If the value contains spaces, enclose the value in quotation marks (").

In the location you specify, a subfolder is automatically created for the specified mailbox that holds the exported calendar items. For example, if you specify the value "C:\My Documents\Calendar Export" to export calendar items from the mailbox of Shannon Steele, the .msg files are actually stored in C:\My Documents\Calendar Export\ssteele@contoso.com.

In on-premises Exchange organizations, you can use the Get-CalendarDiagnosticAnalysis cmdlet to analyze the exported .msg files.

Note: Commands that use this parameter might fail if the calendar item doesn't have a title. If you receive errors when you use this parameter, run the command again and replace this parameter with redirection to a file (| Set-Content -Path "C:\My Documents\Calendar Export") or substitute the output to a PowerShell variable.

Type:String
Position:Named
Default value:None
Required:True
Accept pipeline input:False
Accept wildcard characters:False
Applies to:Exchange Server 2010, Exchange Server 2013, Exchange Online

-MeetingID

The MeetingID parameter filters the results by the globally unique identifier of the calendar item. The value is the CleanGlobalObjectId property of the calendar item that's available in the output of this cmdlet, or by using other MAPI examination tools. An example value is 040000008200E00074C5B7101A82E00800000000B0225ABF0710C80100000000000000001000000005B27C05AA7C4646B0835D5EB4E41C55. This value is constant throughout the lifetime of the calendar item.

To find this value, it's easiest to first search for the calendar item by using the Subject, StartDate and EndDate parameters. After you find the calendar item that you want, you can use its CleanGlobalObjectId value for the MeetingID parameter in future commands.

Don't use this parameter with the Subject parameter, because the value of the MeetingID parameter takes precedence.

Type:String
Position:Named
Default value:None
Required:True
Accept pipeline input:True
Accept wildcard characters:False
Applies to:Exchange Server 2010, Exchange Server 2013, Exchange Server 2016, Exchange Server 2019, Exchange Online

-ReadFromDomainController

This parameter is available only in on-premises Exchange.

The ReadFromDomainController switch specifies that information should be read from a domain controller in the user's domain. You don't need to specify a value with this switch.

The command: Set-AdServerSettings -ViewEntireForest $true to include all objects in the forest requires the ReadFromDomainController switch. Otherwise, the command might use a global catalog that contains outdated information. Also, you might need to run multiple iterations of the command with the ReadFromDomainController switch to get the information.

By default, the recipient scope is set to the domain that hosts your Exchange servers.

Type:SwitchParameter
Position:Named
Default value:None
Required:False
Accept pipeline input:False
Accept wildcard characters:False
Applies to:Exchange Server 2010, Exchange Server 2013, Exchange Server 2016, Exchange Server 2019

-ResultSize

This parameter determines the number of results returned by the cmdlet. The maximum value is 1000.

Type:Unlimited
Position:Named
Default value:None
Required:False
Accept pipeline input:False
Accept wildcard characters:False
Applies to:Exchange Server 2010, Exchange Server 2013, Exchange Server 2016, Exchange Server 2019, Exchange Online

-StartDate

The StartDate parameter specifies the start date of the date range.

Use the short date format that's defined in the Regional Options settings on the computer where you're running the command. For example, if the computer is configured to use the short date format MM/dd/yyyy, enter 09/01/2018 to specify September 1, 2018. You can enter the date only, or you can enter the date and time of day. If you enter the date and time of day, enclose the value in quotation marks ("), for example, "09/01/2018 5:00 PM".

Type:ExDateTime
Position:Named
Default value:None
Required:False
Accept pipeline input:False
Accept wildcard characters:False
Applies to:Exchange Server 2013, Exchange Server 2016, Exchange Server 2019, Exchange Online

-Subject

The Subject parameter identifies the calendar items by the specified text in the Subject field. The text values that you specify aren't case sensitive. If the value contains spaces, enclose the value in quotation marks ("). You can control whether to use exact matching by using the ExactMatch parameter.

Don't use this parameter with the MeetingID parameter, because the value of the MeetingID parameter takes precedence.

Type:String
Position:Named
Default value:None
Required:True
Accept pipeline input:False
Accept wildcard characters:False
Applies to:Exchange Server 2010, Exchange Server 2013, Exchange Server 2016, Exchange Server 2019, Exchange Online

Inputs

Input types

To see the input types that this cmdlet accepts, see Cmdlet Input and Output Types. If the Input Type field for a cmdlet is blank, the cmdlet doesn't accept input data.

Outputs

Output types

To see the return types, which are also known as output types, that this cmdlet accepts, see Cmdlet Input and Output Types. If the Output Type field is blank, the cmdlet doesn't return data.