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QBWC1085: "There Was a Problem with the Log File" — Fix the Web Connector

Published June 10, 2026 · by The FixHub Team

QuickBooks Web Connector pops up — often right at Windows startup — with:

“QBWC1085: There was a problem with the log file. QuickBooks Web Connector will continue without a log file.”

What it actually means: the Web Connector keeps an activity log at QWCLog.txt, and that file has become corrupted or locked (it’s often already in a bad state before you even set up the connection). Web Connector can usually keep running “without a log file,” but the popup is annoying and the broken log can also stall syncs. The fix is to let it build a fresh log.

Renaming (rather than deleting) keeps a copy in case you ever need it, and forces a clean rebuild.

  1. Close QuickBooks Desktop completely.
  2. Open Task Manager (Ctrl + Shift + Esc) → end QuickBooks Web Connector if it’s running.
  3. In File Explorer, go to: C:\ProgramData\Intuit\QBWebConnector\log (ProgramData is hidden — paste the path into the address bar to jump straight there.)
  4. Rename QWCLog.txt to QWCLogOLD.txt.
  5. Reopen QuickBooks Desktop and your company file, then relaunch Web Connector (File → App Management → Update Web Services, or from the system tray).
  6. Web Connector generates a new QWCLog.txt and the error clears.

Deleting QWCLog.txt works too — renaming is just the safer, reversible version of the same fix.

Fix 2: Run as administrator / fix folder permissions

If the log immediately breaks again, Web Connector can’t write to the log folder:

  • Close everything, then right-click QuickBooks Web Connector → Run as administrator.
  • If that helps, the lasting fix is permissions: right-click the C:\ProgramData\Intuit\QBWebConnector folder → Properties → Security and make sure your Windows user has Modify rights.

Fix 3: The “not connected to any app” variant

If you see QBWC1085 at startup but you don’t actually use any Web Connector integration, the simplest fix is to stop it launching:

  1. Sign in as a Windows administrator.
  2. Go to: C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup
  3. Delete the QuickBooks Web Connector shortcut there.
  4. Restart the PC. (This only stops the auto-launch; it doesn’t uninstall Web Connector — re-add it later if you start using an integration.)

FAQ

Is my QuickBooks data at risk? No. QWCLog.txt is just a diagnostic log of sync activity. Renaming or deleting it has no effect on your company file.

The popup only appears when I boot the PC. Web Connector runs at startup and hits the bad log before you open QuickBooks. Do Fix 1; if you don’t use any integration, do Fix 3.

Syncs still fail after the log is rebuilt. Then the problem isn’t the log — check the specific app’s connection. If adding/re-adding the app throws a different code, see QBWC1039: unique OwnerID/FileID pair required.

Where is the log on a server install? Same relative path under C:\ProgramData\Intuit\QBWebConnector\log on the machine where Web Connector runs (where QuickBooks Desktop is installed), not on a workstation.

Sources: Conductor Docs — QBWC1085: There was a problem with the log file, Intuit — Fix common Web Connector errors in QuickBooks Desktop