Troubleshooting Easy2Sync for Outlook — Common FixesEasy2Sync for Outlook is a handy tool for synchronizing Outlook data between computers, devices, or different profiles. When it works, it saves time and prevents data inconsistencies. But like any software that interacts with complex systems and multiple data sources, users can run into problems. This article walks through common issues, step-by-step fixes, and preventative tips to get your synchronization back on track.
1. Before you begin: gather information
Collect key details before troubleshooting to make diagnosis faster:
- Outlook version (e.g., Outlook 2016, 2019, 365)
- Easy2Sync version
- Operating system and build (Windows ⁄11)
- Whether Outlook is running during sync
- Are you syncing local PST files, Exchange/Office 365, or IMAP?
- Any recent changes (Windows updates, Outlook add-ins, network changes)
- Exact error messages or behavior (stuck at 0%, crashes, duplicates)
2. Common issue: Sync doesn’t start
Symptoms: Task shows “not started” or never progresses.
Checks & fixes:
- Ensure Outlook is closed if your sync profile requires it. Some profiles need exclusive access to PST files.
- Confirm Easy2Sync has required permissions; run the program as Administrator (right-click → Run as administrator).
- Verify the sync profile is enabled and scheduled correctly in Easy2Sync settings.
- Disable conflicting third-party software temporarily (antivirus, backup tools) that may lock PST files.
- Repair the Outlook data file: in Outlook, go to File → Account Settings → Data Files → Open File Location and use SCANPST.EXE on the PST.
3. Common issue: Outlook crashes or freezes during sync
Symptoms: Outlook becomes unresponsive or crashes while Easy2Sync runs.
Checks & fixes:
- Make sure you’re using a compatible Outlook version; update Outlook and Easy2Sync to latest patches.
- Disable unnecessary Outlook add-ins: File → Options → Add-ins → COM Add-ins → Go… Uncheck nonessential add-ins and test.
- Run Outlook in Safe Mode (hold Ctrl while starting Outlook) to see if add-ins are the cause.
- Repair Office installation via Control Panel → Programs & Features → Microsoft Office → Change → Repair.
- If PST corruption is suspected, run SCANPST.EXE and create a new profile to test.
4. Common issue: Duplicate items after sync
Symptoms: Contacts, calendar entries, or emails duplicated across profiles.
Checks & fixes:
- Check sync settings: ensure matching criteria (UIDs, entry IDs) are set correctly so Easy2Sync recognizes identical items.
- Use Easy2Sync’s duplicate detection and merge features if available.
- If duplicates already exist, export affected folder to PST, remove duplicates manually or with a deduplication tool, then re-sync.
- Avoid running multiple sync jobs simultaneously between the same sources—this can create race conditions.
5. Common issue: Missing items after sync
Symptoms: Emails, contacts, or events missing post-sync.
Checks & fixes:
- Verify filters and folder mappings in the profile; items might be moved to a different folder or excluded by filter rules.
- Check the Deleted Items and Archive folders.
- Use Easy2Sync’s log to identify which items were processed or skipped.
- Restore from PST backup if available. Regularly back up PST files before major sync operations.
- Temporarily disable any rules or scripts in Outlook that might auto-move or delete items during sync.
6. Common issue: Conflicts — versions differ on two machines
Symptoms: Same item edited differently on two machines; sync reports conflict.
Checks & fixes:
- Review conflict settings in Easy2Sync: choose the correct conflict resolution policy (newer wins, source wins, prompt).
- If prompt is enabled, carefully inspect both versions before choosing which to keep.
- For calendar events, check for differences in recurrence patterns or time zones that may create apparent conflicts.
- For recurring conflict loops, consider exporting and reimporting the item after reconciling changes.
7. Common issue: Authentication or connection errors (Exchange/Office 365/IMAP)
Symptoms: Login failures, ⁄403 errors, or inability to connect to server.
Checks & fixes:
- Re-enter credentials and ensure multi-factor authentication (MFA) is handled properly. Use app-specific passwords if required.
- Confirm network and proxy settings; test connecting to the mail server via Outlook.
- Make sure OAuth2 is supported and enabled if required by your mail provider.
- Update Easy2Sync to support recent authentication methods used by Office 365.
- Check for service issues on the provider side (Office 365 status page).
8. Common issue: Performance problems — sync is slow
Symptoms: Sync takes a long time or consumes high CPU/disk.
Checks & fixes:
- Limit the scope: exclude large folders (Inbox with many messages, Sent Items) or reduce date range in settings.
- Compact PST files to improve performance: File → Account Settings → Data Files → Settings → Compact Now.
- Run sync during off-peak hours and avoid simultaneous heavy tasks.
- Ensure antivirus is not scanning PST files during sync; add exclusions for Outlook data files.
- Increase hardware resources (SSD, more RAM) if using very large PSTs.
9. Using logs effectively
Easy2Sync provides logs that are crucial for diagnosing issues.
- Locate logs via the program’s menu (Help → Open Logs) or the installation folder.
- Scan for ERROR, WARNING, or EXCEPTION entries and note timestamps.
- If opening a support ticket, attach the relevant log excerpt and a concise description of the problem, steps to reproduce, and system details.
10. Recreate profile / clean reinstall
When other steps fail:
- Export important data to PST as backup.
- Uninstall Easy2Sync, reboot, and reinstall the latest version.
- Create a new sync profile from scratch rather than modifying an old one.
- If Outlook profile may be corrupt, create a new Outlook profile: Control Panel → Mail → Show Profiles → Add…
11. Preventative tips
- Keep Easy2Sync and Outlook up to date.
- Schedule regular backups of PST/OST files.
- Use clear folder mappings and conservative filters when syncing for the first time.
- Test sync on a small folder first before broad operations.
- Maintain at least one machine where you don’t run major sync changes simultaneously.
12. When to contact support
Contact Easy2Sync support if:
- Logs show internal errors or crashes you can’t resolve.
- Authentication issues persist after checking credentials and provider settings.
- You’re unsure how to reconcile large-scale duplicates or conflicts.
Provide logs, versions, Windows build, Outlook version, and a short reproduction path.
If you’d like, tell me the exact error message or paste a relevant log excerpt and I’ll help interpret it and suggest precise steps.
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