QB Issue Resolution:

I believe this is a known issue in QuickBooks. We can do this workaround below and see if this will somehow fix the problem:

Please put this link on the browser and save it to desktop:


Open the zip file until current folder and copy all the contents and paste it in this location:

C:Program FilesCommon FilesIntuitSync

C:Program Files(x86)Common FilesIntuitSync

Resolution for Issue 'Sync Manager Error – Unable to communicate with Sync Manager. Win 8.1.' available: Yes (Solved).
Source: Intuit Community forum.

Sync Manager Error – Unable to communicate with Sync Manager. Win 8.1.: this issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the issue yourself by looking for a resolution described below. If it is a complex issue or you are unable to solve the issue, you may contact us by clicking here or by using other support options.

Support for file
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