• Fixes a synchronization error that could occasionally lead to missing items on the SimpleSYN server.
• Fixes an error that occurred when Outlook reused an ID of a deleted item and the deletion had not yet been synchronized.
• Fixes an error that, in very rare cases, caused a folder to no longer be synchronized.
• Updates the dependencies of the SimpleSYN setup program. Due to changed digital signatures of the Microsoft .NET Framework, a repair installation of SimpleSYN was no longer possible.
• Minor optimizations and bug fixes.

Category en- U S: SimpleSYN

Major Release: No

Build Version: 19518

Major Version: 6

Minor Version: 8

Revision Version: 617

Release Date: 3/24/2025

• Fixes an internal bug during connection establishment.
• Improves the reliability and performance of the synchronization.

Category en- U S: SimpleSYN

Major Release: No

Build Version: 18321

Major Version: 6

Minor Version: 7

Revision Version: 667

Release Date: 3/22/2024

• Fixes a possible vulnerability in the SimpleSYN installer component.
• Enhances the behavior in cases of a Windows restart initiated by the restart manager (e.g. by a Windows Updates).
• Minor bug fixes and optimizations.

Category en- U S: SimpleSYN

Major Release: No

Build Version: 18214

Major Version: 6

Minor Version: 6

Revision Version: 674

Release Date: 2/14/2024

• Fixes a possible problem when synchronizing public Exchange folders.
• Minor bug fixes.

Category en- U S: SimpleSYN

Major Release: No

Build Version: 17804

Major Version: 6

Minor Version: 5

Revision Version: 916

Release Date: 10/4/2023

• Fixes an error in the setup program, which sometimes prevents custom connection configurations from establishing a connection.

Category en- U S: SimpleSYN

Major Release: No

Build Version: 17310

Major Version: 6

Minor Version: 4

Revision Version: 853

Release Date: 6/23/2023

• Improves the behavior when closing an Outlook session.
• Fixes a possible crash while loading Outlook folders or server folders in sync settings.
• Fixes an error when creating a new Outlook folder while selecting a destination folder in the client synchronization settings.
• Generally improved reliability through many other minor optimizations and bug fixes.

Category en- U S: SimpleSYN

Major Release: No

Build Version: 17208

Major Version: 6

Minor Version: 3

Revision Version: 1049

Release Date: 4/11/2023

• Fixes a possible crash if a folder gets deleted in Outlook.
• Fixes an error when synchronizing data from an IMAP account. Moved or deleted folders were sometimes not correctly detected and synchronization continueed.
• Minor fixes.

Category en- U S: SimpleSYN

Major Release: No

Build Version: 17109

Major Version: 6

Minor Version: 2

Revision Version: 602

Release Date: 3/9/2023

• If there was an error accessing the network, it may not be possible to connect afterwards.
• Fixes an error during the initialization of the server.
• Fixes an error when accessing Outlook folders that were recently deleted.
• Fixes a crash during exit.
• Fixes a possible crash when closing Windows notifications.
• Other minor bug fixes and optimizations.

Category en- U S: SimpleSYN

Major Release: No

Build Version: 17008

Major Version: 6

Minor Version: 1

Revision Version: 1001

Release Date: 2/8/2023

• Fixes an error when using the custom connection configuration.
• It was not possible to open a new license file, if the current license is about to expire.
• Fixes a possible crash when displaying notifications is not allowed.
• Minor fixes and optimizations.

Category en- U S: SimpleSYN

Major Release: No

Build Version: 16813

Major Version: 6

Minor Version: 0

Revision Version: 884

Release Date: 12/13/2022

• The duplicate finder sometimes marks different items as duplicates.
• Minor fixes and optimizations.

Category en- U S: SimpleSYN

Major Release: No

Build Version: 16703

Major Version: 5

Minor Version: 0

Revision Version: 918

Release Date: 11/3/2022

• Improved: Easier selection of default folders in sync settings. The default folders are now automatically mapped to each other. This applies, for example, to folders with the addition "(only this computer)".
• Improved: The service functionality does not require the Windows password anymore, if all data files are stored locally (Business Edition only).
• Improved: Improved connection establishment during network changes or when an Internet connection becomes available.
• Improved: Improved notifications.
• Improved: Improved selection of the SimpleSYN Server.
• Improved: Improvements in the Outlook Add-In:
  • Supports Office UI themes.
  • Revised "Recover Deleted Items" dialog.
  • The duplicate finder can now be used in "Deleted Objects" folder.
  • The Outlook Add-In now also supports SimpleSYN Mobile.
• Improved: The SimpleSYN client will always display its connection status, even if no synchronization takes place.
• Improved: Backed up items are now automatically removed after 30 days by default.
• Improved: It is no longer possible to assign different folder types to each other in the synchronization settings.
• Improved: Improved log functionality.
• Improved: Improved Outlook version detection, e.g. Outlook 20219/2021 are now correctly displayed.
• Improved: Improves filtering of recurring appointments (Business Edition only).
• Improved: Improved performance of the status dialog.
• Improved: Improved connectivity on systems with many network connections.
• Improved: Very large folder hierarchies are now not loaded at once, which allows to select the folders faster.
• Improved: Improved performance for the duplicate finder.
• Improved: If an folder needs to be resynchronized, it will do so immediately.
• Improved: Unsynchronizable folders are not shown in the synchronization settings anymore.
• Improved: While selecting a target folder for the synchronization, unavailable folders are not shown anymore.
• Improved: The synchronization will start immediately after resolving a conflict.
• Improved: After saving the synchronization settings, the synchronization will start faster.
• Improved: Renamed the executable files to "SimpleSYN.Desktop.exe" and "SimpleSYN.Desktop.Service.exe".
• Improved: Only show compatible SimpleSYN servers found on the local network.
• Fixed: If an item could not be imported, an invalid entry occurred in the state database and the item was no longer synchronized.
• Fixed: If conflicts were resolved differently and therefore not being synchronized, it was necessary to reset the conflict on both sides.
• Fixed: Fixes an display error for conflicts. The wrong time was used to calculate the conflict state ("newer/older").
• Fixed: Displaying an item during conflict resolution may have failed with a "item not found" error.
• Fixed: The notification icon was sometimes not updated, if the Windows explorer hang for a short period.
• Fixed: Fixes translations in the Outlook Add-In.
• Fixed: The "Restore deleted objects" dialog of the Outlook Add-In was sometimes not correctly refreshed.
• Fixed: Automatically emptying the backup folder could sometimes cause sending read-reports.
• Fixed: The sort order of the items in the duplicate finder was incorrect if an item had no subject.
• Fixed: The sort order of the items in the duplicate finder was sometimes incorrect if items had the same subject.
• Fixed: Displaying contacts in the duplicate finder has been fixed.
• Fixed: The SimpleSYN client sometimes displays an incorrect message "Server paused".
• Fixed:The progress bar in the status dialog always went backwards a little bit.
• Fixed: In Outlook closed data files were not correctly released by SimpleSYN. This caused the files to be in use until SimpleSYN was restarted.
• Other: Many more minor fixes and optimizations.
• Removed: The manual synchronization from within the Outlook Add-In has been removed, because this functionality was in use very rarely.
• Removed: The flyout window opening with a single click on the notification icon has been removed.

• NEW: Reminders can be excluded from syncing to make it easier to work in a shared calendar folder (Business Edition only).
  • Reminders can be completely ignored.
  • Only closed reminders can be ignored.
• NEW: The read status of items can be set to a preconfigured value during synchronization (Business Edition only).
• NEW: Categories can be excluded from synchronization (Business Edition only).
• NEW: Unknown categories can be automatically added to the Outlook main category list.
• NEW: Makes it easy to send diagnostic data through a built-in feedback form.
• NEW: Additional filter options (Business Edition only):
  • Sync only future appointments.
  • Sync only items without a category.
• NEW: Filters are now also applied to sub folders (Business Edition only).
• NEW: Automatic error reporting.
• NEW: New state database technology.
• NEW: New function for selecting folders in sync settings. All subfolders of a data file can be selected at once via the context menu.

Category en- U S: SimpleSYN

Major Release: Yes

Build Version: 16711

Major Version: 6

Minor Version: 0

Revision Version: 874

Release Date: 12/5/2022

• Due to a changed digital signature of the .NET Framework, the setup failed in case .NET was not previously installed on the target machine. The digital signature has been updated.
• Fixes an connection error when using proxy servers.
• Fixes an error while searching SimpleSYN updates.
• Fixes an crash of the user interface.
• Updated Microsoft VC++ Runtime Version 14.1.

Category en- U S: SimpleSYN

Major Release: No

Build Version: 15212

Major Version: 5

Minor Version: 0

Revision Version: 978

Release Date: 8/13/2021

• Fixes a very rare error when saving the configuration that causes SimpleSYN to stop working.
• Fixes a rare crash when showing the pending synchronization state.

Category en- U S: SimpleSYN

Major Release: No

Build Version: 14523

Major Version: 5

Minor Version: 0

Revision Version: 969

Release Date: 6/22/2021

• Resolves a possible crash if file system permissions in Windows folders differ from the default settings.

Category en- U S: SimpleSYN

Major Release: No

Build Version: 13315

Major Version: 5

Minor Version: 0

Revision Version: 907

Release Date: 1/15/2020

• Fixes an incorrect notification of unresolved conflicts, even if there is no need to resolve conflicts.
• Fixes an error while loading the folder hierarchy, if sub folders are not supported.
• The fix-up of distribution lists/contact groups will now make sure the selected contact is unique.
• Fixes an error that caused the client to show "online", but no synchronization takes place.
• Other optimizations and bug fixes.

Category en- U S: SimpleSYN

Major Release: No

Build Version: 13126

Major Version: 5

Minor Version: 0

Revision Version: 662

Release Date: 11/26/2019

• Fixes an error in the folder hierarchy synchronization. If Outlook returned an internal error while opening a folder, it was possible that SimpleSYN deleted this folder accidentally instead of stopping the synchronization.

Category en- U S: SimpleSYN

Major Release: No

Build Version: 12823

Major Version: 5

Minor Version: 0

Revision Version: 952

Release Date: 8/26/2019

• Fixes a crash when Outlook is returning an unexpected error.

Category en- U S: SimpleSYN

Major Release: No

Build Version: 12812

Major Version: 5

Minor Version: 0

Revision Version: 618

Release Date: 8/15/2019

• Resolves a possible crash due to errors in third-party MAPI datastores.
• Resolves a very rare connection problem that could cause SimpleSYN to hang with 100% CPU usage.
• Smaller bug fixes and tweaks.

• NEW: Improves the performance when starting SimpleSYN.
• NEW: Improves the mapping of items during initial synchronization.

Category en- U S: SimpleSYN

Major Release: No

Build Version: 12806

Major Version: 5

Minor Version: 0

Revision Version: 1077

Release Date: 8/7/2019

• Improves error handling for custom Outlook data fields that cannot be resolved. As a result, synchronization may have stopped and continued incorrectly.
• Resolves an issue if the synchronization state on the server has been deleted. If only a few items were synchronized once, the client did not recognize the required resynchronization and the synchronization was performed incorrectly.

• NEW: Improved initial synchronization between different versions of Outlook. For example, different separators in messages, or incorrectly formatted links, are handled better, eliminating duplicates during initial synchronization.
• NEW: After SimpleSYN starts, the folder hierarchy is always transferred once to synchronize changes to it more quickly.
• NEW: Subject line prefixes are now transferred separately to correctly represent custom values. Custom prefixes also could have lead to duplicates when a resynchronization takes place.

Category en- U S: SimpleSYN

Major Release: No

Build Version: 12711

Major Version: 5

Minor Version: 0

Revision Version: 919

Release Date: 7/12/2019

• Improves reliability when importing items with unexpected data

Category en- U S: SimpleSYN

Major Release: No

Build Version: 12621

Major Version: 5

Minor Version: 0

Revision Version: 590

Release Date: 6/24/2019

• Fixes an error while deleting data fields. This error led to faulty synchronization with Outlook version 1906 (Build 11727.20104) and newer
• Fixes an error when enabling or disabling the Outlook add-in via "advanced options"

Category en- U S: SimpleSYN

Major Release: No

Build Version: 12614

Major Version: 5

Minor Version: 0

Revision Version: 888

Release Date: 6/14/2019

• Fixes a problem that date values greater than 12/31/9999 23:59:59.9 could cause a crash or a cancellation of the synchronization
• Fixes a crash that could occur due to incorrect error handling when accessing Outlook items
• Fixes a discontinuation of synchronization if an attachment could not be synchronized correctly
• Smaller bug fixes and tweaks

Category en- U S: SimpleSYN

Major Release: No

Build Version: 12613

Major Version: 5

Minor Version: 0

Revision Version: 666

Release Date: 6/13/2019

• Fixes an error that could lead to a disconnection if the connection used an relay server
• Fixes an error when closing a relayed network connection
• Fixes a problem that an unexpected data type within an Outlook item may cause an interruption of the synchronization
• Fixes a problem that leads to no data file being available for the synchronization, if the Outlook profile contains an error
• Removes a misleading log entry

• NEW: Improves the reliability of the connection when using IPv4 and IPv6 simultaneously
• NEW: Improves support for local proxy servers such as Fiddler

Category en- U S: SimpleSYN

Major Release: No

Build Version: 123604

Major Version: 5

Minor Version: 0

Revision Version: 1199

Release Date: 6/4/2019