SharePoint 2013:
Troubleshooting an Access Issue
With a Custom
Master Page
There are several reasons create a custom master page,
whether it be to remove features users can see or add custom text. Whatever your reason, if you or your end
users are now encountering the “Sorry you don’t have access to this page”
message it could be because they don’t have access to the Master Page Gallery
library. To resolve this issue please
follow the steps below:
1. On the home page of your site click the Site
Settings
gear.

2. From the drop-down select
Site settings.

3. On the Site Settings page, under Web Designer
Galleries, click Master pages and page layouts.
4. In the Master Page Gallery library click
Library, to expand the ribbon.
5. On the far right click
Library Settings.

6. Under Permissions and Management click
Permissions for this document library.

7. This will display all of the groups and or users
who have access to view the master page.
8. From the ribbon click
Grant Permissions.

9. Enter the users individual names or a SharePoint
group.
10. Click
SHOW OPTIONS.

11. This
will allow you to modify the user level of permission, if you would like.
12. Once
you have verified the users/groups and level of permission click
Share.
13. You
will then see the users and or groups in the list.
14. Log
back into the site with one of the users who previously didn’t have access and
verify this worked.
Please understand if this does not resolve the issue you’re
encountering there could be another underlying issue with permissions that
still needs to be addressed.