To help you make the payment seamlessly and execute payroll-related tasks, you must update QuickBooks and payroll on time so that you are infused with recent security patches and bug fixes. However, there are chances to fall into various issues while updating QB or payroll. QuickBooks error 12002 is one common problem that frequently appears on the screen while getting the newest release of the QuickBooks application.

The reasons why it takes place are unstable internet connection, outdated Windows, insufficient admin rights, and many others. To help you overcome this issue, we have conducted thorough research about it and brought you this detailed blog. The post has separate sections, including different information. Go deeper into it to gain complete knowledge and get rid of QB error 12002.

Key Factors Leading to the QB Update Error 12002

Here is the list of reasons that might be responsible for the occurrence of QB error 12002. Let’s see them one by one:

  1. It can be due to unstable internet connection settings.
  2. An outdated QB can be one reason for it.
  3. QBDT error 12002 can occur due to misconfigured date and time settings.
  4. Due to incorrect Secure Socket Layer (SSL) settings.
  5. An outdated Windows OS can cause it.
  6. This can occur due to a damaged QB company file.
  7. It is mainly because the firewall is blocking the workstation.
  8. You might not have admin rights to run the software update.

Practical Fixes That Work for QuickBooks Error 12002

Consider the following solutions that can be implemented to resolve 12000 associated issues, such as QuickBooks error 12031, 12002, 12009, etc.

Solution 1: Run the TLS 1.2 utility

  1. Open the QB Tool Hub.
  2. Choose Installation Issues.
  3. Tap on the QuickBooks TLS 1.2 Tool option.
  4. And to open the TLS Tool, choose OK.
  5. Tap Yes to the EULA Agreement.
  6. Click on Run.
  7. When the tool completes the task, click Exit.

Solution 2: Configure the firewall manually

  1. Go to the Start menu.
  2. In the search box, type Windows Firewall and open it.
  3. Choose Advanced Settings.
  4. Right-click on the Inbound Rules option.
  5. Choose New Rule.
  6. Click Port, followed by Next.
  7. Ensure that the TCP option is chosen.
  8. Head to the Specific Local Port field.
  9. Enter the specific port based on the QB year version.
    • QuickBooks Desktop 2020 and later: 8019, XXXXX.
    • QuickBooks Desktop 2019: 8019, XXXXX.
    • QuickBooks Desktop 2018: 8019, 56728, 55378-55382.
    • QuickBooks Desktop 2017: 8019, 56727, 55373-55377.
  10. After you have entered the port number, choose Next.
  11. Click on Allow the Connection.
  12. Tap Next.
  13. If you are asked, ensure that all the profiles are marked.
  14. Click Next and create a rule with QBPorts(year) name.
  15. When it is done, tap Finish.
  16. Do the same to create outbound rules. Only change step 4, where you need to choose Outbound Rules instead of Inbound Rules.
  17. Open QB and switch to multi-user mode.

In a Nushell

In the blog post, we discussed the reasons why QuickBooks error 12002 arises and disrupts your business workflow. Moreover, we explored some ways to eliminate it. If you still can’t rectify the problem, consult a professional for help. To talk with an expert, dial 1.855.738.2784.

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