SYNC NOT WORKING? HOW TO FIX MOST COMMON SYNC ISSUES

COMMON / FREQUENTLY REPORTED ISSUES/ERRORS

Either there is no default mail client or the current mail client cannot fulfill the messaging request

"Invalid License Key" error when registering gSyncit.

How to register gSyncit with your license key.

System.IO.FileLoadException: Could not load file or assembly 'Microsoft.Office.Interop.Outlook, Version=15.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c' or one of its dependencies. Access is denied.

gSyncit Outlook toolbar does not appear in Outlook (Sync not working)

Google.Apis.Requests.RequestError while syncing with Google Drive.

gSyncit Outlook add-in Failure - 80070005 Failed to create instance of the Microsoft .Net Framework runtime.

gSyncit Outlook add-in keeps being reset to inactive/disabled

TYPE_E_CANTLOADLIBRARY and TYPE_E_LIBNOTREGISTERED failure

Corrupt Outlook entries causing sync errors. How to repair your Outlook personal folder file (.pst)

Authentication error when syncing with Google, Toodledo or Wunderlist

A Outlook component failed to load due to a problem with the Outlook installation

OutOfMemoryException encountered while syncing

SYNC CONFIGURATION

How to sync multiple computers using gSyncit (What's the "Primary Source")?

How to enable Google Keep Notes sync

How to setup user-defined fields mappings for task sync mappings

How to sync Franklin Covey Outlook task priorities in Outlook with Pocket Informant

How to sync multiple Google calendars with the same Outlook calendar

How to sync disable confirming deletes

How to create an application specific 2-step password for gSyncit

How to reset my Google calendar and do a clean sync from Outlook

How to reset all gSyncit configurations.

SYNC WORKFLOWS EXPLAINED

How gSyncit syncs Outlook/Google attendees

How gSyncit syncs Outlook/Google phone numers

LICENSING AND REGISTRATION

How to transfer a license to a new computer

How to register gSyncit / "Invalid Registration Key" when registering

INSTALLATION ISSUES/ERRORS

"There is a problem with the Windows installer package."

Installer reports error 2502 & 2503.

Both gSyncit 32/64 bit installers report needing Outlook 32 or 64 bit

Software upgrade fails due to missing prior installation

Could not open key UNKNOWN...

Fix issue preventing gSyncit from being uninstalled or removed.

GENERAL SYNC ERRORS/ISSUES

(401) Unauthorized error when syncing with Google contacts.

(401) Unauthorized error when setting up CardDav/CalDav sync with iCloud.

"Condition not valid" error while syncing tasks

The selected Google calendar is no longer valid

End date occurs before start date.

Sync process runs slowly in Exchange managed environment

Duplicate invites appear in the Outlook/Google calendar

Calendar sync wants to delete unexpected events when syncing by day range

Problems resolving Exchange email address to Google entries

Outlook crashing unexpectedly when gSyncit is installed

"Bad Data" or "Cache read error for type" error while syncing with Toodledo or Pocket Informant

Email message body is blank in Outlook

"One or more items in the folder you synchronized do not match. To resolve the conflicts, open the items, and then try this operation again."

(SecureChannelFailure) The request was aborted: Could not create SSL/TLS secure channel. (Using ESet Nod32)

Failure while searching for matching Outlook...