The date format is a Windows setting. QWin will use the short date format that is set in Windows.
Next is to determine whether the slow startup is due to the Quicken program or your data file.
Hold CTRL while double-clicking the Quicken icon. This will open Quicken with no data file and only File and Help menus. See whether it is fast or slow.
Then load your data file from the File menu and see how long that takes.
Look through both your accounts list and your category list for that ACCT_10c63. If you find it in either place, delete it.
Next thing to try is a File > Copy or Backup File > Create a copy or template. This is the only operation in Quicken which rebuilds your database record by record. It also leaves behind items which were marked deleted and so can reclaim some space.
After creating the copy, close Quicken and reopen it by double-clicking the new QDF file you just created. See whether that's any faster than your usual startup. If it is, you got lucky. You can use that file going forward, but you will have to reconnect your online accounts.
Any more rabbits in your hat?
Running out of rabbits. Anyway, that trick never works.
Last ditch: try the Windows tweaks listed in this FAQ.
Maybe one last rabbit: where is your data file physically located? If it's anywhere other than a local drive on your PC, access will be slower.
@Rocket J Squirrel Maybe you should try pulling out squirrels instead of rabbits.🤣
Hey hey hey! I resemble that!
Try Edit>Preferences>Quicken ID & Cloud Account to sign in as a different user. Then sign back in.
Adding- try editing preferences to open to a different screen to see if timing improves.
Note that while not a speed increase, from what you display, your data file resides in your backup folder. It really should be in the Documents/Quicken folder.
There is no "Do Updates on program Startup" (if that's even a choice.)
There is, but you'd surely notice it if that was happening. It's under Preferences > Startup.
My QWin Premier opens quickly on 2 Win10 PCs without disabling the network. There must be some configuration issue on your PC.
Did you try the items in the FAQ I mentioned earlier?
Did. You. Try. The. Windows. Tweaks.
There is not much left for Quicken employees to suggest beyond what has already been suggested. You are one guy and not everyone shares your issue. So it comes down to what makes your setup different.
Just out of curiosity, what is the full path to the folder that contains your Quicken data file on the hard? Are you using OneDrive, Dropbox or Google Backup?
Have you tried creating a new Windows user account and running Quicken from there?
Network Settings.. Public or Private
I too was having very slow startups on my laptop (network setting was for "PUBLIC") but satisfactory startup on a different PC (network setting was "PRIVATE") Both used copies of the same data file.
Switching my network profile to private has greatly improved my startup time to an acceptable level.
I went from over a minute to 8 seconds for a start up with my only change being the Private network setting👍️