7 Most Common Outlook Errors You Should Know

Microsoft Outlook issues can stop all operations related to email communication. Error messages, synchronization failures, mailbox access, and performance slowdowns are the most frequent errors that you face.

These errors often occur without any warnings or signs, which leaves you searching for troubleshooting ways. So, check out the guide to identify common Outlook errors and know effective solutions to resolve them.

Frequent Causes: Why Do Errors Appear In Outlook?

Since all Outlook errors arise due to different reasons, the following are the most common sources that may trigger them:

• Oversized PST files.
• Outdated Outlook versions.
• Outlook data file corruption.
• Network connectivity problems.
• Damaged or corrupted Outlook profiles.
• Faulty Add-ins create operational conflicts.

[Apply To All] Quick Outlook Errors Troubleshooting Checklist

Each Outlook problem originates from different causes, but the provided basic checks will apply to all of them. Here they are:

• Backup your Outlook data files.
• Disable all the installed add-ins.
• Make sure that Outlook is up to date.
• Check the internet connection stability.
• Restart the system or the Outlook application.
• Confirm that the mailbox storage doesn’t exceed the limits.

Common Outlook Errors And Their Relevant Solutions [Listed Top 7 Ones]

Go through the below section to find the curated list of Microsoft Outlook issues and their effective solutions in detail. Let’s check them out.

Error 1: Outlook Startup Errors

Startup errors are the most common Outlook errors that you may face.

Effect A: Outlook Won’t Open

Related symptoms:

• Application closes immediately.
• Outlook freezes on the load screen.
• “Can’t start Outlook” message appears.

Recommended Solution:

• Disable Outlook Add-ins.
• Repair Microsoft Office Program.

Error 2. Send and Receive Errors

When these errors appear, you can’t send or receive email messages.
Effect A: Outlook Cannot Send Emails

Related Symptoms:

• Send/Receive operation fails.
• Emails are queued in the Outbox.
• SMTP errors displayed by Outlook.

Applicable Solutions:

• Verify SMTP settings.
• Check internet connectivity.
• Make sure Outlook can connect with the mail server.
• Reconfigure your email account after removal in Outlook.

Effect B: Outlook Is Not Receiving Emails
Related Symptoms:

• Inbox not updating.
• New messages won’t display.
• Delays in the synchronization process.

Applicable Solutions:

• Verify the configured email account.
• Update folder synchronization manually.
• Check the mailbox has sufficient space available.

Error 3: Outlook Performance Errors

Issues related to performance can make Outlook slow and unresponsive. The most frequent ones are below:
Effect A: Outlook App Freezes or Crashes
Related Symptoms:

• Slow loading time.
• Unresponsive Outlook.
• Frequent application crashes.

Application Solutions:

• Archive old email messages.
• Create a new Outlook profile.
• Disable unnecessary add-ins.

Effect B: Outlook App Becomes Slow
Related Symptoms:

• Delayed application startup.
• Switching folders becomes slow.
• App lags between the email operations.

Applicable Solutions:

• Compact Outlook data files.
• Reduce the number of connected accounts.
• Make sure Outlook and Windows are up to date.

Error 4: Outlook PST Errors

Accessibility issues mainly arise due to PST file corruption.
Effect A: PST File Won’t Open Or Is Corrupted
Related Symptoms:

• PST file is corrupted or damaged.
• Errors have been detected in the file.
• Outlook data file cannot be accessed.

Applicable Solutions:

• Use the Inbox Repair tool for minor corruption.
• Go with the automated solutions for severe corruption.

Error 5: Synchronization Errors In Outlook

Another common yet easily fixable error in Microsoft 365 and Exchange environments.
Effect A: Outlook Not Connected With Server
Related Symptoms:

• Delayed updates.
• Previous mailbox content.
• Missing emails across devices.

Applicable Solutions:

• Rebuild the Outlook Data file.
• Verify the Exchange Server connectivity.

Error 6: Search-Related Errors In Outlook

Search functionality is one of the most crucial for better productivity.
Effect A: Search Feature Not Working
Related Symptoms:

• Incomplete search results.
• No result shown in searches.
• Not able to find email messages.

Applicable Solutions:

• Rebuild the search index.
• Verify Windows Search Service.

Error 7: Outlook Authentication Errors

Microsoft 365 and Exchange users commonly face authentication problems.
Effect A: Outlook Keeps Asking for Password
Related Symptoms:

• Authentication failures.
• Repeated login prompts.
• Account verification issues.

Applicable Solutions:

• Remove stored credentials.
• Recreate the Outlook profile for persistent authentication issues.

Ending Notes

Here, we have covered the Outlook troubleshooting tips and common errors in detail. You can use the provided information to get an overview of common Outlook errors and their relevant solutions.
Almost every issue is fixed by simple methods until you face data file corruption. If that’s the case, try to repair the file with the SCANPST.EXE tool. Go with the Recoveryfix Outlook PST Repair tool when the built-in utility of Microsoft fails.

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