---
title: "Start-VBOOrganizationSynchronization"
description: "This cmdlet starts to synchronize Microsoft organization objects with the organization cache database. Veeam Backup for Microsoft 365 uses the organization cache database to store information about all restore points created for Microsoft 365..."
canonical: "https://helpcenter.veeam.com/docs/vbo365/powershell/start-vboorganizationsynchronization.html"
breadcrumb: "PowerShell Reference > Veeam Backup for Microsoft 365 PowerShell Reference > Organizations Management > Organizations > Start-VBOOrganizationSynchronization"
dateModified: "2026-08-31"
---

# Start-VBOOrganizationSynchronization

## Short Description
Starts to synchronize Microsoft organization objects with the organization cache database.

::: note

Synchronization of objects with the organization cache database is only available for Microsoft organizations with modern app-only authentication.

:::

## Syntax
```
Start-VBOOrganizationSynchronization -Organization <IVBOOrganization> [-Full]
 [-Parts <VBOOrganizationSyncParts>] [<CommonParameters>]
```

## Detailed Description
This cmdlet starts to synchronize Microsoft organization objects with the organization cache database. Veeam Backup for Microsoft 365 uses the organization cache database to store information about all restore points created for Microsoft 365 organizations and to index all objects in Microsoft 365 organizations with modern app-only authentication.

## Parameters

<table style="width:100%;" class="Blue_Table">
      <tr style="vertical-align:top">
        <th style="width:20%;">
          <p>Parameter</p>
        </th>
        <th style="width:20%;">
          <p>Description</p>
        </th>
        <th style="width:20%;">
          <p>Type</p>
        </th>
        <th style="width:10%;">
          <p>Required</p>
        </th>
        <th style="width:10%;">
          <p>Position</p>
        </th>
        <th style="width:10%;">
          <p>Accept Pipeline Input</p>
        </th>
      </tr>
      <tr style="vertical-align:top">
        <td>
          <p class="Table_Text_Bold"><span class="Table_Text_Bold">Full</span></p>
        </td>
        <td>
          <p>Defines that the cmdlet will start synchronization of all objects in this Microsoft organization.</p><p>Default: <em>False</em></p>
        </td>
        <td style="width:10%;">
          <p><code>SwitchParameter</code></p>
        </td>
        <td style="width:10%;">
          <p>False</p>
        </td>
        <td style="width:10%;">
          <p>Named</p>
        </td>
        <td style="width:10%;">
          <p>False</p>
        </td>
      </tr>
      <tr style="vertical-align:top">
        <td>
          <p class="Table_Text_Bold"><span class="Table_Text_Bold">Organization</span></p>
        </td>
        <td>
          <p>Specifies a Microsoft organization. The cmdlet will start synchronization of objects for this Microsoft organization.</p><p>IVBOOrganization</p><p>Accepts the <a href="vboorganization.md"><code>VBOOrganization</code></a> object.</p><p>To get this object, run the <a href="get-vboorganization.md"><code>Get-VBOOrganization</code></a> cmdlet.</p>
        </td>
        <td style="width:10%;">
          <p><code>IVBOOrganization</code></p>
        </td>
        <td style="width:10%;">
          <p>True</p>
        </td>
        <td style="width:10%;">
          <p>Named</p>
        </td>
        <td style="width:10%;">
          <p>True (ByValue)</p>
        </td>
      </tr>
      <tr style="vertical-align:top">
        <td>
          <p class="Table_Text_Bold"><span class="Table_Text_Bold">Parts</span></p>
        </td>
        <td>
          <p>Specifies the organization parts that the cmdlet will synchronize. You can specify several parts separated by a comma:</p><ul><li><code>Users</code></li><li><code>Groups</code></li><li><code>GroupMembers</code></li><li><code>Sites</code></li><li><code>Mailboxes</code></li><li><code>All</code></li></ul><p>Default: <em>All</em></p>
        </td>
        <td style="width:10%;">
          <p><code>VBOOrganizationSyncParts</code></p>
        </td>
        <td style="width:10%;">
          <p>False</p>
        </td>
        <td style="width:10%;">
          <p>Named</p>
        </td>
        <td style="width:10%;">
          <p>False</p>
        </td>
      </tr>
    </table>

`<CommonParameters>`

This cmdlet supports Microsoft PowerShell common parameters. For more information on common parameters, see the [About Common Parameters](http://go.microsoft.com/fwlink/p/?LinkID=113216) section of Microsoft Learn.

## Examples

::: example
### Example 1: Synchronizing All Microsoft Organization Objects with Organization Cache Database

This example shows how to start synchronizing all Microsoft organization objects with the organization cache database.

```
$orgs = Get-VBOOrganization
foreach ($org in $orgs) { Start-VBOOrganizationSynchronization -Organization $org -Full:$true }
```

Perform the following steps:

1. Run the [`Get-VBOOrganization`](get-vboorganization.md) cmdlet. Save the result to the `$orgs` variable.
2. Run the `Start-VBOOrganizationSynchronization` cmdlet. Set the `$org` variable as the `Organization` parameter value. Set the `true` value for the `Full` parameter.

:::

::: example
### Example 2: Synchronizing Specific Organization Parts with Organization Cache Database

This example shows how to start synchronizing the users and sites of the `abc.onmicrosoft.com` Microsoft organization with the organization cache database.

```
$org = Get-VBOOrganization -Name abc.onmicrosoft.com
Start-VBOOrganizationSynchronization -Organization $org -Parts Users, Sites
```

Perform the following steps:

1. Run the [`Get-VBOOrganization`](get-vboorganization.md) cmdlet. Specify the `Name` parameter value. Save the result to the `$org` variable.
2. Run the `Start-VBOOrganizationSynchronization` cmdlet. Set the `$org` variable as the `Organization` parameter value. Specify the `Users` and `Sites` values for the `Parts` parameter.

:::

## Related Commands

[`Get-VBOOrganization`](get-vboorganization.md)