Cannot change WebPart ExportMode to ‘All’. WebPart will be skipped (WebPart ID: <guid>)
To back up Web Parts with the Modern App-Only Authentication method, Veeam Backup for Microsoft 365 requires setting the "Export Mode" property of the web part from "None" to "All" to make this Web Part exportable and available for backup.
Sometimes changing the "Export Mode" property is prohibited by a SharePoint administrator, and thus Veeam Backup for Microsoft 365 cannot change it and back up the Web Part. When this occurs, the "Cannot change WebPart ExportMode to 'All'. WebPart will be skipped" warning is shown.
To allow the "Export Mode" to be changed by Veeam Backup for Microsoft 365, you must enable the "Allow custom script" option for the affected SharePoint sites.
Critical Note: Suppressing the warning will prevent the alert, and WebParts that would have triggered the warning will be skipped silently and not protected by Veeam Backup for Microsoft 365.
Before you begin:
Perform the following 4 steps on the Veeam Backup for Microsoft 365 server and each of the Proxies:
<Source ShowSkippedSharePointWebPartsWarning="False" />
If the Proxy.xml already contains a
<Source /> node, add the parameter ShowSkippedSharePointWebPartsWarning="False" after the existing parameters.
Do not create a second
<Source /> line entry within the Proxy.xml file, it will not be read.
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