Microsoft MS-220 : Troubleshooting Microsoft Exchange Online

  • Exam Code: MS-220
  • Exam Name: Troubleshooting Microsoft Exchange Online
  • Updated: Oct 17, 2026
  • Q & A: 107 Questions and Answers

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About Microsoft MS-220 Exam Questions

Headaches come from bad options, not hard exams. The right MS-220 materials change the equation, and ValidVCE's Microsoft Troubleshooting Microsoft Exchange Online bank — written by IT experts and certified trainers, every answer verified — is built to be exactly that.

Microsoft MS-220 Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: Troubleshoot Mail Client Issues20-25%- Troubleshoot Calendaring Issues
  • 1. Delegation issues
  • 2. Mailbox and calendar diagnostics
  • 3. Calendar permissions
- Troubleshoot Connectivity and Authentication
  • 1. Client access rules
  • 2. Modern authentication issues
  • 3. Outlook connectivity problems
  • 4. Autodiscover issues
- Troubleshoot Mobile Device Issues
  • 1. Mobile synchronization logs
  • 2. ABQ list analysis
  • 3. ActiveSync connectivity
  • 4. Device access rules
- Troubleshoot Calendar Sharing
  • 1. External calendar sharing
  • 2. Published calendar synchronization
Topic 2: Troubleshoot Hybrid and Migration Issues10-15%- Troubleshoot Migration Issues
  • 1. Migration endpoint creation issues
  • 2. Failed migrations
  • 3. Public folder migration issues
  • 4. Slow migrations
  • 5. Data Consistency Score issues
  • 6. Move request analysis
- Troubleshoot Hybrid Configuration Issues
  • 1. Free/busy sharing issues
  • 2. Hybrid Configuration Wizard issues
  • 3. Remote recipient synchronization issues
  • 4. Hybrid mail flow issues
Topic 3: Troubleshoot Compliance and Retention Issues25-30%- Troubleshoot Compliance Issues
  • 1. Mailbox holds and recoverable items
  • 2. Search and purge email messages
  • 3. Retention policies
  • 4. eDiscovery permissions and actions
- Troubleshoot Microsoft Purview Message Encryption and S/MIME
  • 1. Protected message handling
  • 2. S/MIME troubleshooting
  • 3. Encryption and decryption issues
  • 4. Encryption-related mail flow rules
  • 5. External recipient access issues
- Troubleshoot Retention Issues
  • 1. MRM diagnostics and message properties
  • 2. Retention tags and actions
  • 3. Retention policy application issues
  • 4. Retention age calculation
Topic 4: Troubleshoot Exchange Online Configuration Issues15-20%- Troubleshoot Public Folder Issues
  • 1. Public folder access
  • 2. Hybrid public folder access
  • 3. Mail-enabled public folders
- Troubleshoot Provisioning Issues
  • 1. Directory synchronization issues
  • 2. Domain setup and configuration
- Troubleshoot Recipient Issues
  • 1. Recipient configuration
  • 2. Address lists
- Troubleshoot Organization-wide Settings
  • 1. Address book policies
  • 2. Allowed file types
Topic 5: Troubleshoot Mail Flow Issues20-25%- Troubleshoot Other Mail Flow Issues
  • 1. Troubleshoot inbox rules
  • 2. Interpret NDR data
  • 3. Identify triggered transport rules
  • 4. Analyze attachment blocking rules
- Troubleshoot Mail Flow Issues with External Systems
  • 1. Troubleshoot hybrid mail flow
  • 2. Troubleshoot DNS-related issues
  • 3. Analyze SMTP protocol logs
  • 4. Troubleshoot SMTP certificate issues
  • 5. Troubleshoot SMTP relay issues
- Troubleshoot Exchange Online Mail Flow Issues
  • 1. Review and interpret message trace results
  • 2. Troubleshoot send and receive issues
  • 3. Review and interpret message headers
  • 4. Troubleshoot delivery delays
  • 5. Analyze mail flow rules and routing policies
- Troubleshoot Microsoft Defender for Office 365 Issues
  • 1. Analyze spam classifications
  • 2. Troubleshoot quarantined messages
  • 3. Validate SPF, DKIM, and DMARC
  • 4. Troubleshoot anti-spam policies

The MS-220 Details Every Candidate Should Check

As of the latest information, the MS-220 exam requires a passing score of 700/1000 and a registration fee of USD 165. Microsoft may revise either figure, so confirm both on the official site before scheduling.

Microsoft lists these prerequisites for the Microsoft Troubleshooting Microsoft Exchange Online: No mandatory prerequisite exam. Strong experience with Exchange Online, hybrid environments, PowerShell, and Microsoft 365 administration is recommended..

Check the current requirements on the official certification page before booking.

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Per current exam information, the MS-220 exam contains 40-60 questions within a 120 minutes-minute limit. Practicing under those exact conditions removes the format shock on exam day.

The Microsoft Troubleshooting Microsoft Exchange Online blueprint centers on these main domains:

  • Troubleshoot Hybrid and Migration Issues (10-15%)
  • Troubleshoot Exchange Online Configuration Issues (15-20%)
  • Troubleshoot Mail Flow Issues (20-25%)

The full official outline continues with further domains; the question bank covers them all.

Microsoft Troubleshooting Microsoft Exchange Online Sample Questions:

Question #1

A company named Contoso, Ltd. has an Exchange Online environment. Contoso uses inbound and outbound connectors to route emails between its Microsoft 365 organization and a third-party mail provider.
Users report that meeting requests sent from the third-party mail provider to a room mailbox named [email protected] are not being processed automatically. Meeting requests from users in the Microsoft 365 environment are processed successfully.
You need to resolve the issue.
How should you complete the PowerShell command? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.

Reveal Solution  Discussion  0

Correct Answer:

Question #2

A company uses Exchange Online. External sharing is disabled.
A user reports that they are unable to share their calendar with an external recipient.
You need to resolve the issue.
Solution: Configure a mail flow rule to allow meeting requests from the user.
Does the solution meet the goal?

  • A. No
  • B. Yes
Reveal Solution  Discussion  0

Correct Answer: A  🗳️

Question #3

A company uses Exchange Online. An administrator deletes a mailbox named Userl when the user leaves the company. Six months later the user returns to the company. and the administrator creates a new mailbox named User1.
A user reports receiving the following non-delivery report (NDR) when they send an email to Userl:
RfSOlVER.-DR.E-RecipNotFojr.d; not found
You need to recommend a solution to resolve the issue. What should you recommend?

  • A. Instruct the user to delete User1 from their Microsoft Outlook autocomplete cache.
  • B. Remove User1 from the Blocked Senders list.
  • C. Delete the LegacyExchangeDN value on the new User1 mailbox.
  • D. Instruct the user to type the email address for User1.
Reveal Solution  Discussion  0

Correct Answer: A  🗳️

Question #4

A company uses Exchange Online.
You notice that the user1 @contoso.com account is in the recycle bin.
You need to purge account from the recycle bin.
How should you complete the command? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.

Reveal Solution  Discussion  0

Correct Answer:

Question #5

A company uses Exchange Online. The company configures the following retention tags:
* Inbox: Delete in 365 days.
* Deleted Items: Delete in 30 days.
A user receives an email on April 27, 2022 and deletes the email on May 28, 2022. You need to determine the retention period of the email. On which date will the email expire?

  • A. April 27, 2023
  • B. May 27, 2022
  • C. May 28, 2022
  • D. June27,2022
Reveal Solution  Discussion  0

Correct Answer: C  🗳️

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