Common SharePoint Mistakes to Avoid

The most common SharePoint mistakes include implementing it without a clear business purpose, editing master pages carelessly, poor content structuring at scale, undersized server hardware, ignoring verbose logging settings, uploading oversized images, skipping JavaScript and CSS minification, and rebuilding functionality that already exists natively in SharePoint. Each of these creates performance, maintainability or upgrade problems down the line.

Start with a clear business purpose

SharePoint operates as a collaborative and document management platform suited to businesses of nearly any size, supporting document management, workflow automation, dashboards and process streamlining. Many organizations struggle because they roll out SharePoint without first defining exactly what business problem it needs to solve.

Before implementation, an organization should identify its specific requirements, whether that is a document management system, a portal solution or something else entirely. Skipping this step is one of the most common reasons SharePoint rollouts underdeliver.

Editing master pages carelessly

Master page customization changes the look and feel of an entire SharePoint environment, which means even a small coding error can create effects across every connected library and list. Customizations built directly into default files also risk breaking or disappearing entirely during product updates.

A safer approach avoids modifying default files directly, uses version control to track changes, and leans on CSS or SharePoint themes for styling changes rather than editing core master page code.

Content structuring at scale

SharePoint started as a content management tool and evolved into a full intranet platform, but organizations with hundreds of thousands of records often struggle to keep that content organized in a meaningful way.

• Have authors structure content consistently as it is created, not after the fact
• Include a search box on all main pages
• Notify users when documents change
• Use metadata consistently to make content findable
• Promote library-level searches over relying on general site search alone

Hardware, logging and file management

Poor environment design is a frequent cause of slow SharePoint sites. Organizations need to verify their servers meet minimum hardware requirements for CPU, RAM, disk and network capacity, since complex deployments often need more than the baseline recommendation.

Verbose logging is another overlooked factor. Oversized SharePoint log files can affect server performance directly. Checking and adjusting settings through Central Administration's diagnostic logging configuration, and using PowerShell's Clear-SPLogLevel command when needed, helps keep logs from growing unchecked. Event Log Flood Protection should also be enabled to prevent runaway log growth from recurring.

Large images uploaded without a defined file size and format policy also degrade performance. Resizing images before upload keeps pages loading quickly while preserving site appearance.

Minify scripts and avoid rebuilding existing functionality

Minimizing JavaScript and CSS files, removing comments, unnecessary characters and whitespace, and shortening variable names, speeds up page load times and generally improves site performance.

A less obvious mistake is developers rewriting SharePoint functionality that already exists natively. New, custom-built features usually carry more bugs than Microsoft's already-tested native functionality, simply because they have not been through the same scale of testing. In most cases, extending or configuring existing SharePoint capabilities is a better path than rebuilding them from scratch.

Key takeaways

• Define a clear business purpose before implementing SharePoint, rather than adopting it without a plan.
• Avoid editing master pages directly; use version control and CSS or themes instead.
• Structure content deliberately as it scales, using metadata and consistent search tools.
• Verify server hardware, manage logging and minify scripts to keep performance strong.

Frequently asked questions

Why do SharePoint customizations sometimes break after an update?

Customizations built directly into default master pages or system files are at risk during SharePoint updates, since Microsoft's updates can overwrite or conflict with modified default files. Using version control and applying styling changes through CSS or themes instead of direct master page edits reduces this risk significantly.

How do oversized images affect a SharePoint site?

Large, unoptimized images slow down page load times across the site, which affects the overall user experience and can make SharePoint feel sluggish even when the underlying infrastructure is sound. Setting a clear policy for image file formats and sizes, and resizing images before upload, prevents this without sacrificing visual quality.