After applying latest update, checking register balance is waaay off. Why?

I'm glad restoring the backup file seems to have resolved the checking and savings accounts issues.

Sometimes when updating the installed version of Quicken there are some issues encountered. IMO, it seems the occurrence of issues is a little more common when the updating is done by the Quicken software than when I manually download and install the Manual Patch Update File so I usually update manually.

Issues that sometimes can occur:

1. Opening balance sometimes changes.
2. Duplicate transactions sometimes get added to the register.
3. Some transactions will be changed from Reconciled or Cleared to not Cleared.
4. Some Preferences get changed. (The one that most frequently happens to me and is most concerning to me is that my Automatic Backup settings get changed. So I ALWAYS review all of my preferences after each version update.)
5. Tax Planner settings get changed.
6. Sometimes saved reports will be corrupted requiring those reports to be recreated and saved, again.
7. Unusual calculation results in various accounts, reports and planning tools.
8. Sometimes the files is simply too corrupted to be useful for much of anything.

These things usually do not happen but they happen enough to be of a concern and to require diligence to check out everything.

Sometimes the fix is pretty simple: Download the Manual Patch Update File and install it right over the installed Quicken application.

Other times it might require the restoration of a backup file dated from just before the version update. As you noted, recently that has resulted in all of the EWC and EWC+ accounts to return CC-800 errors which requires those accounts to be Reset or to be added again via Add Account or Set Up Now and then to be Linked to the accounts that are already in Quicken. (This restoration process can also cause Opening Balance and duplicate transactions issues.)

Because of these issues I always recommend doing the following before proceeding:

1. Enter and save the Opening Balance transaction dollar amount into the Memo field (if not already done previously.
2. Always back up the data file.

Good luck!

Quicken does not give us that option but Windows does. Update your Windows UAC Settings to Always notify as shown in the following picture. When Quicken tries to force update your installation you will be prompted to decide whether or not to let the update proceed. Works like a charm.:

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