Voyage AI joins MongoDB to power more accurate and trustworthy AI applications on Atlas.
 ×
MongoDB logo
  • General Information
  • Documentation
  • Developer Articles & Topics
  • Community Forums
  • Blog
  • University
  • Platform
    atlas_product_familyAtlasBuild on a developer data platform
    Platform Services
    atlas_databaseDatabaseDeploy a multi-cloud databaseatlas_searchSearchDeliver engaging search experiencesmdb_vector_searchVector SearchDesign intelligent apps with gen AIatlas_stream_processingStream ProcessingIntegrate MongoDB and Kafka
    Self Managed
    enterprise_advanced_product familyEnterprise AdvancedRun and manage MongoDB yourselfcommunity_edition_product_familyCommunity EditionDevelop locally with MongoDB
    Tools
    mdb_compassCompassWork with MongoDB data in a GUIatlas_integrationIntegrationsIntegrations with third-party servicesmdb_migratorRelational MigratorMigrate to MongoDB with confidence
    View All ProductsExplore our full developer suitearrow-right
    MongoDB 8.0Our fastest version everarrow-right
    Build with MongoDB Atlas
    Get started for free in minutes
    Sign Up
    Test Enterprise Advanced
    Develop with MongoDB on-premises
    Download
    Try Community Edition
    Explore the latest version of MongoDB
    Download
  • Documentation
    Atlas DocumentationGet started using AtlasServer DocumentationLearn to use MongoDBStart With GuidesGet step-by-step guidance for key tasks
    Tools and ConnectorsLearn how to connect to MongoDBMongoDB DriversUse drivers and libraries for MongoDB
    Resources HubGet help building the next big thing with MongoDBarrow-right
    Connect
    atlas_product_familyDeveloper CenterExplore a wide range of developer resourcesgeneral_events_ask_the_expertsCommunityJoin a global community of developersgeneral_content_tutorialCourses and CertificationLearn for free from MongoDBgeneral_events_sessionEvents and WebinarsFind an event or webinar near you
  • Use cases
    Artificial IntelligencePaymentsServerless DevelopmentGaming
    Industries
    Financial ServicesTelecommunicationsHealthcareRetailPublic SectorManufacturing
    Solutions LibraryOrganized and tailored solutions to kick-start projectsarrow-right
    Startups and AI Innovators
    For world-changing ideas and AI pioneers
    Learn morearrow-right
    Customer Case Studies
    Hear directly from our users
    See Storiesarrow-right
  • CareersStart your next adventureBlogRead articles and announcementsNewsroomRead press releases and news stories
    PartnersLearn about our partner ecosystemLeadershipMeet our executive teamCompanyLearn more about who we are
    Contact Us
    Reach out to MongoDB
    Let’s chatarrow-right
    Investors
    Visit our investor portal
    Learn morearrow-right
  • Pricing
MongoDB logo
Skip to main content
MongoDB Developer Community Forums
  • Home
  • User Groups & Events
  • Leaderboards
Welcome to the
MongoDB
Developer Community
Community GuidesGet Started with MongoDB Vector Search
developer-image

.NET MongoDB.Driver 3.3.0 & Realm 20.1.0 not working

MongoDB Atlas App Services & Realm
dot-net

You have selected 0 posts.

select all

cancel selecting

Luigi_De_Giacomo
27d

I have this error at compile time:

The type ‘ObjectId’ is defined in an assembly that is not referenced. You must add a reference to assembly ‘MongoDB.Bson, Version=2.21.0.0, Culture=neutral, PublicKeyToken=null’.



New & Unread Topics

Topic list, column headers with buttons are sortable.
Topic Replies Views Activity
Change document field inside Update Trigger
MongoDB Atlas App Services & Realm
2 331 May 2024
Realm web local storage issue when logout then login
MongoDB Atlas App Services & Realm
realm-web
 0 294 Jul 2024
Keep login information persistent with 12.0.0-browser.2
MongoDB Atlas App Services & Realm
realm-web
 0 272 Jul 2024
About Realm Web Performs
MongoDB Atlas App Services & Realm
performance
 0 231 Jul 2024
Wait for synchronization takes too long
MongoDB Atlas App Services & Realm
atlas-device-syncflutterflexible-sync
 0 56 Aug 2024

Want to read more? Browse other topics in MongoDB Atlas App Services & Realm or view latest topics.

MongoDB logo
© 2025 MongoDB, Inc.

About

  • Careers
  • Investor Relations
  • Legal
  • Privacy Policy
  • GitHub
  • Security Information
  • Trust Center
  • Connect with Us

Support

  • Contact Us
  • Customer Portal
  • Atlas Status
  • Customer Support

Deployment Options

  • MongoDB Atlas
  • Enterprise Advanced
  • Community Edition

Data Basics

  • Vector Databases
  • NoSQL Databases
  • Document Databases
  • RAG Database
  • ACID Transactions
  • MERN Stack
  • MEAN Stack
© 2025 MongoDB, Inc.