We just need to set it up under QuickBooks Preferences. ☺ Here’s how:

Go to Edit >Preferences >Desktop View (left pane) >My Prefences tab.
Check Save current desktop and click on OK after.

Resolution for 'boot up issue: 'how do i get quickbooks to boot up full screen?' available: Yes.

The boot up 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 boot up issue yourself by looking for a resolution described in the article. If it is a complex boot up issue or you are unable to solve the issue, you may contact us by clicking here or by using other boot up support options.

For more information about resolving issues related to boot up in Quickbooks/QBO or to get support for the issue 'how do i get quickbooks to boot up full screen?', click the link below: