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How to fix slow IMAP syncing issues in Outlook (Nothing else worked)

Why is Outlook taking long to sync folders and emails? How to fix this?

Even though the Microsoft Office Outlook app is said to be the best on the market, it is still susceptible to problems, with slow email synchronization being one of them. The reasons for IMAP being slow are far and wide, but the most common are:

  • Huge number of emails;
  • The Internet connection;
  • Bad add=ins;
  • The PST (Personal Storage Table) file.

The solutions below will help you fix this error. Check them out, and follow the instructions carefully.

Select specifications which apply:

Click on this if your computer runs on Windows OS.

Click on this if your computer runs on Mac OS.

Click on this if none of the solutions worked.

  1. Reinstall Outlook

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  2. Upgrade or replace your computer

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