msolap.dll

What Is msolap.dll?

msolap.dll is the core library for the Microsoft OLE DB Provider for Analysis Services, used to connect applications to Microsoft SQL Server Analysis Services (SSAS). The version referenced here corresponds to Analysis Services 16.0, part of newer SQL Server and Azure Analysis Services client stacks.

This DLL enables client applications to query, browse, and interact with OLAP cubes, tabular models, and analytical datasets.

What msolap.dll Does

msolap.dll provides the OLE DB connectivity layer for SSAS, including:

• Establishing connections to local or remote SSAS servers
• Executing MDX, DAX, and DMX queries
• Retrieving cube, tabular, and metadata schemas
• Handling authentication and session management
• Managing rowsets and multidimensional datasets
• Providing data bindings to dashboards, BI tools, and analytics software

It is required by many Microsoft and third-party applications such as:

• Excel (PivotTables connected to SSAS)
• Power BI Desktop (legacy connectors)
• SQL Server Management Studio (SSMS)
• Data warehouse and BI visualization tools

Where msolap.dll Is Found

msolap.dll is installed with Microsoft Analysis Services OLE DB Providers, typically found in:

C:/Program Files/Microsoft Analysis Services/AS OLEDB/140/
C:/Program Files/Microsoft Analysis Services/AS OLEDB/150/
C:/Program Files/Microsoft Analysis Services/AS OLEDB/160/

(The exact folder depends on the provider version.)

It is not a Windows system file and should remain in the provider’s installation directory.

Why Applications Need This DLL

Applications use msolap.dll to:

• Connect to SSAS cubes and tabular models
• Run analytics queries
• Retrieve and process business intelligence data
• Interact with modern or legacy OLAP environments

Without this DLL, SSAS connectivity will fail.

Common Errors Related to msolap.dll

msolap.dll was not found.

Unable to load the Microsoft OLE DB Provider for Analysis Services.

Failed to initialize SSAS client libraries.

Provider cannot be loaded: msolap.dll.

These issues typically occur when:

• The Analysis Services OLE DB Provider is missing
• Incorrect or outdated versions are installed
• The BI tool expects a different provider version
• Registry references to the provider are corrupted

How To Fix msolap.dll Issues

1. Install or Reinstall the Microsoft Analysis Services OLE DB Provider

Download the correct provider version (e.g., 16.0) from Microsoft’s official SQL Server or Analysis Services client tools packages.

2. Ensure the Version Matches the Application Requirement

Some applications require:

• Provider 14.0
• Provider 15.0
• Provider 16.0

Using the wrong version may cause connection errors or provider loading failures.

3. Repair SSAS Client Components

If installed through SQL Server features or SSMS, running a repair may restore missing provider files.

4. Check for Antivirus or Blocked Files

Security tools may block provider DLLs due to their network behavior. Restore the DLL if quarantined.

5. Confirm 32-bit vs 64-bit Compatibility

• 64-bit BI tools require 64-bit provider
• 32-bit applications require 32-bit provider

Using the wrong architecture prevents the provider from loading.

Manual Install Instructions

If you obtained a clean, verified copy of msolap.dll from DLLme, you can reinstall it manually:

1. Place the DLL in the OLE DB Provider Install Path

For example:

C:/Program Files/Microsoft Analysis Services/AS OLEDB/160/

Or inside the exact version directory your application uses.

2. Register the Provider (If Required by the Application)

Some environments require COM registration:

regsvr32 msolap.dll

(Use the version that matches the application’s architecture.)

3. Restart the BI or Client Application

SSAS connectors reload provider libraries when the application starts.

Summary

msolap.dll is the Microsoft OLE DB Provider for Analysis Services library, enabling applications to connect to SSAS tabular and multidimensional models. It handles query execution, metadata retrieval, and data access for analytics and BI tools.

Missing or mismatched versions of this DLL typically require reinstalling the correct provider or restoring the DLL to its provider directory.