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Migration Assessment Scan: Master Pages

Learn how to mitigate issues with Master pages during migration.

Overview

During migration, the default master page should be set on all migrated sites. This setting ensures the site renders once the migration is complete, as the content migration doesn't have a dependency on any custom master pages. If you have custom master pages assigned to sites, you need to set the Master Page property on the new site after the migration completes.

Data Migration

Important

Custom master page files (*.master) shouldn't be migrated to the new platform. The setting on the destination site is set to the default master page. This process ensures the site renders after the migration.

Preparing for Migration

Review the report and determine where you can move away from custom master pages before you migrate. Plan and understand what post migration work is necessary to use the customized file moving forward.

Post Migration

If you decide to continue using the customized master page on the new platform, you need to apply the master page setting and validate your customizations work on the new platform.

Scan Result Reports

NonDefaultMasterPages-detail.csv This scan report contains all the sites with a custom master page applied.

Column Description
SiteId Unique identifier of the impacted site collection.
SiteURL URL to the impacted site collection.
SiteOwner Owner of the site collection.
SiteAdmins List of people listed as site collection administrators.
SiteSizeInMB Size of the size collection in megabytes (MB).
NumOfWebs Number of webs that exist in the site collection.
ContentDBName Name of the content database hosting the site collection.
ContentDBServerName SQL Server hosting the content database.
ContentDBSizeInMB Size of the content database hosting the site collection.
LastContentModifiedDate Date/Time the site collection had content modified.
TotalItemCount Total number of items found in the site collection.
Hits
Number of requests logged for the site collection. Relies on data from the usage logging service. This row shows N/A if the usage logging service is disabled.
DistinctUsers
Number of distinct users who accessed the site collection. Relies on data from the usage logging service. This row shows N/A if the usage logging service is disabled.
DaysOfUsageData Number of days the usage logging service retains data. This information provides context for Hits and DistinctUsers. For example, if this number is 14 days, the Hits and DistinctUsers data is for the last 14 days.
WebUrl Url to the subsite with the master page setting configured.
WebTitle Title of the impacted subsite.
MasterPageUrl Server relative path to the master page referenced by the MasterPageUrl property.
CustomMasterPageUrl Server relative path to the master page referenced by the CustomMasterPageUrl property.
ScanID Unique identifier assigned to a specific execution of the SharePoint Migration Assessment Tool.