If you’re stepping into your new role and looking for a SharePoint admin setup guide, you’re in the right place. Becoming a SharePoint administrator comes with many responsibilities, from managing site security to optimizing performance. This SharePoint admin setup guide walks you through five essential steps every new admin should take to build a secure, organized, and scalable environment from day one.
1. Lock Down External Sharing Settings
One of the first and most important things you should do as a SharePoint admin is secure your external sharing settings. Navigate to Microsoft 365 Admin Center, head to the SharePoint admin center, and click on Policies > Sharing.
Here, you’ll see various sharing options ranging from:
- Anyone with the link
- Existing guests only
- People in your organization only
Best Practice:
Start with “Existing guests only” or even “Only people in your organization” to minimize risk. It’s always better to begin with strict settings and loosen them gradually as needed, rather than accidentally exposing sensitive data and having to walk it back later.
Also, don’t forget: these settings apply to OneDrive as well.
2. Set Site Creation Defaults
Control how new SharePoint sites are created by adjusting the site creation settings. In the SharePoint admin center:
- Go to the gear icon (Settings).
- Choose Site Creation.
From here, you can:
- Decide whether users are allowed to create sites.
- Remove the option to create sites directly from SharePoint or OneDrive.
- Specify a default URL prefix for sites.
- Set the correct time zone for accurate metadata and retention tracking.
Why This Matters:
Restricting who can create sites helps maintain a clean, organized environment and prevents unnecessary sprawl.
3. Manage Storage Limits
Storage configuration is a core part of any SharePoint admin setup guide. Whether you choose automatic or manual allocation, it’s important to actively monitor site usage and scale resources appropriately to keep things running smoothly.
- In the admin center, go to Settings > Site Storage Limits.
- Choose between automatic or manual allocation.
If you opt for manual control, you can assign storage limits to each site individually. This is particularly useful for:
- High-usage sites with media-heavy content.
- Preventing users from overloading storage.
- Monitoring and adjusting based on actual usage.
To manage storage per site:
- Go to Active Sites.
- Select a site.
- Under the General tab, view and adjust the storage limit.
4. Audit and Adjust Site Permissions
Every SharePoint admin setup guide should emphasize reviewing site permissions regularly. Mismanaged access can lead to confusion, security risks, and compliance issues. Always verify that each site has the correct owners, members, and visitor settings.
- In Active Sites, select a site and view the Membership tab.
- You’ll see:
- Group owners (Microsoft 365 group)
- Site owners, members, and visitors
Pro Tip:
Ensure every site has at least two owners to avoid bottlenecks if someone goes on vacation or becomes unavailable.
Review access regularly to prevent permission creep, where more users gain access over time without clear need or oversight.
5. Optimize Site Performance with Diagnostics
Performance tuning wraps up our SharePoint admin setup guide. Using the free Page Diagnostics for SharePoint Chrome extension, you can analyze and optimize page load speeds and catch inefficiencies before they affect your users.
Solution:
Use Microsoft’s Page Diagnostics for SharePoint Chrome extension.
- Install it from the Chrome Web Store.
- Run it on individual SharePoint pages to identify issues like:
- Long load times
- Missing CDNs
- Oversized content
- Inefficient web parts (e.g., Power BI embeds using iframes)
Key Insight:
Performance diagnostics must be done per page, not site-wide. This granular analysis ensures you catch bottlenecks before they affect users.
Final Thoughts
By following this SharePoint admin setup guide, you’ll lay a strong foundation for a secure, efficient, and well-governed SharePoint environment. Each of these five steps ensures your organization gets the most out of its investment in Microsoft 365.
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