QB Issue Resolution:

ave steps for that. Please check if this will fix it:

Open QuickBooks and maximize the window.
Once it’s maximized, Log Off of the computer itself. (Just leave QuickBooks opened and maximized while logging off the computer)
Once the system is up again, open QuickBooks and see if it will maximize automatically now.

Resolution for Issue 'QuickBooks opens in a window about an inch long.' available: Yes (Solved).
Source: Intuit Community forum.

QuickBooks opens in a window about an inch long.: 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.

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