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Sync error - Could not load file or assembly 'Act.Framework.Synchronization

Nickel Super Contributor
Posts: 843
Country: United States

Sync error - Could not load file or assembly 'Act.Framework.Synchronization

Synchronization has failed. Could not load file or assembly 'Act.Framework.Synchronization, Version=, Culture=neutral, PublicKeyToken=ebf6b2ff4d0a08aa' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040) Contact your administrator for assistance. HF3

Windows XP

Brand new rdb's


Some users are synching fine, and others get this error.


Rita Kogstad
RKA Associates
Stamford, CT
Platinum Elite Contributor
Posts: 6,537
Country: USA

Re: Sync error - Could not load file or assembly 'Act.Framework.Synchronization

On each machine with the issue, browse to the directory C:\Windows\assembly and locate the the file Act.Framework.Synchronization. See if the version of the file is If not, then try reapplying Hot Fix 3. Download and instructions are in KB Article 25309.

Greig Hollister

Note: Effective 6/1/13, Sage no longers provides support for the Act! software. This is now provided by Swiftpage.

Bronze Contributor
Posts: 955
Country: Australia

Re: Sync error - Could not load file or assembly 'Act.Framework.Synchronization



So if reapplying the hotfix does not work what other options are available to update the assembly to the correct version

Paul Buchtmann Australia
Australia's First ACT Consultant (1989)

FREE Record History to change default to Call or To-Do for ACT! 2010-2012 versions. Custom versions also available.