The user can resolve the error by rebuilding the company file. The user will have to carry out the onscreen instructions when the message about rebuilding the company file appears on the screen and rebuild the data utility. The steps to be followed are as follows:
- First of all, the user is supposed to ensure to have the backup of the company file
- And then, the user will have to move to the file menu. And then, hover over the utilities tab and then select the verify data option

- Now, the user needs to let the tool check the file for data issues
- Followed by selecting the expand all option from the verify results screen
- And lastly, select the see online article, for the steps to fix the error
Alternate method
The user can update the QuickBooks software to latest release to fix the issue. The steps to be followed are as follows:
- The first step is to move to the help menu and then choose the update QuickBooks desktop option

- And then, move to the update now tab and then choose the reset update checkbox to clear all previous updates
- Now, choose get updates to begin with the download

- After that restart QuickBooks when the download completes
- The last step is to accept the option to install the new release
The steps above would surely help in rectifying the QBWin.log errors in QuickBooks desktop. However, if the error persists or in case of any query, then connect with the QuickBooks error support experts by dialling the toll-free i.e. 1-800-761-1787.
The accounting experts and certified QB professionals will ensure to provide you with immediate technical assistance.