Hi there, @DCOmar. I can provide some solutions to the errors you may have in QuickBooks Online.

Opening a sample company file can assist you in figuring out whether the issue is with your company file or with QuickBooks.

Here's how to open a sample file:

1. From the No Company Open window, select Open a sample file.
2. Select any sample file from the list.

If the sample file opens, your company file may be damaged, or the folder where the company file is saved may be damaged.

Proceed to solution #4 if the example file produces the same error message. Go to this link: Unrecoverable Error: General Troubleshooting Steps

You can create a new window administrator by following solution #6.

Here's how:

1. Select the Start menu, then choose Settings > Accounts > Family & other users.
2. Under Other Users, select Add someone else to this PC.
3. Select I don't have this person's sign-in information, then Add a user without a Microsoft account.
4. Enter the name of the new account, then select Finish.
5. Recommended: Assign a password to the new account to ensure security.
6. Select the newly created account, then choose Account Type.
7. Choose Administrator, then OK.

Fill me in if you have additional questions or concerns about entering invoices or adding item discounts. The Community and I will be around to help. Take good care of it.