Once that is done, see if you experience the same problem in this test file. From there, you can then switch back to your original file.
Follow the steps below to switch files:
Quicken will list the most recently opened data files, with a checkmark next to the file you are currently viewing.
Let us know how it goes!
First thing I'll recommend is to save a backup to revert back to just in case. You can find how to do so down below.
https://www.quicken.com/support/how-backup-or-restore-your-quicken-data
Next we'll try deactivating all of the accounts. You can do so by following the article listed down below.
https://www.quicken.com/support/deactivate-online-banking-services-quicken-account
Once all the accounts are deactivated go ahead and follow the article here on reconnecting the accounts.
https://help.quicken.com/pages/viewpage.action?pageId=3216277Once you've tried this let us know if you're able to get the accounts connected back on your main file. Thanks,Quicken Francisco