QuickBooks 2020 R13-35 will not update

Hi there, @RangerZ. I'll share some additional solutions to ensure you'll be able to update QuickBooks. 

When updating QuickBooks Desktop (QBDT), ensure to do it on the device where it's installed or the server itself. Also, make sure the system date and time on your computer are correct. This way, it won't interfere with the update process.

Here's how to update:

1. Create a backup copy of your company file.
2. Close your company files and QuickBooks.
3. Open the Windows Start menu.
4. Search for QuickBooks Desktop.
5. Right-click the icon and select Run as administrator.
6. While on the No Company Open screen, go to the Help menu and select Update QuickBooks.
7. Go to the Options tab. Select Mark All and then select Save.
8. Go to the Update Now tab and select the Reset Update checkbox.
9. When you're ready, select Get Updates.

Once completed, close and reopen QBDT. This is to ensure that all components are updated. You can check out this article for more info: Fix QBDT Update Errors.

If you're using a Hosting service, I recommend reaching out to them so they can allow the update. In case you're still unable to get the latest release, I'd recommend contacting our Customer Care Support team again. They can perform further troubleshooting to determine what's causing this update issue.

Keep us posted here if you have other questions about updating your software. I'm always here to help. Stay safe.

I have tried to apply your instructions as flows

1 - Date and time are good

2 - Internet connection is good, reset IE defaults.

3 - Firewall and AV - Spent substantial time on this, it's not user friendly, some was already configure, not feeling this is the issue as Updates seem to download in the updates window, it's the actual application of the updates that is NOW failing. No security changes, has worked for some time, but more below.

After posting this I was informed that our 2019 was now refusing to update with the same and additional new messages. I have included some attachments.

1 - Updating QuickBooks.png - This is the message we now see when opening both 2019 and 2020 on most occasions. This began on 2020 2 updates ago and just yesterday on 2019 after trying to apply an update based on receiving the next item.

2 - Critical QuickBooks update.png - this began the day before yesterday with QB 2019 and what prompted my attempt to update 2019. I also now get this when opening 2020.

3 Close All Instances to install Critical Updates.png - After attempting to update I get this message. I have tried closing QB and restarting, I have also tried rebooting prior to restart. I either then get message 1 or 2. I do not get any of the more familiar updating messages.

4 QuickBooks 2020 Theme change.png - I do not think relevant but popped up while trouble shooting. No clear on what it means or why it was displayed.

FWIW, 2019 is stick at R16_45, nit clear what the latest sub version is. 2020 is R13_40 on my desktop.

Let's make sure you'll be able to update QuickBooks, RangerZ.

Sometimes, an incorrect system date or time on your computer can interfere with the update process. You'll want to check the system date and time on your computer.

To do this, follow the steps below:

1. Right-click the system clock on your desktop and select Adjust Date/Time.
2. Select Change date and time and specify the current date and time.
3. Select OK twice.
4. Close and reopen QuickBooks Desktop.
5. Run the update of QuickBooks Desktop again.

If it still not updating, you can test your secure Internet connection by opening a browser and visiting Chase Banking. If you're unable to open the Chase banking page, you won't get updates from QuickBooks. You'll have to contact your Internet Service Provider (ISP) for help. If you're able to view the website, start QuickBooks Desktop and do the following:

1. From the Help menu, select Internet Connection Setup.
2. Select Use my computer's Internet connection settings to establish a connection when this application accesses the Internet.
3. Select Next.
4. Select Advanced Connection Settings.
5. On the Advanced tab, select Restore Advanced Settings.
6. Select Ok.
7. Select Done.
8. Update QuickBooks Desktop again.

Please check this article for more information: Fix QuickBooks Desktop Update Errors. In addition, you may also encounter other errors in QuickBooks Desktop, learn from this article for your guide: Fix Common Problem And Errors With The QuickBooks Desktop Tool Hub.

Reach out to us if you have any questions about updating QuickBooks. We'll always be right here to help you.