Quickbooks 2010 crashes when trying to register (or not register)

I've been running Quickbooks 2010 on Windows 10 for the last year with no problem. After this last Windows 10 update, however, I am no long able to open Quickbooks. It opens to the point where it asks me to register and then it crashes regardless whether I choose Register Now or Register Later. I have tried the following:

1. Uninstalled and reinstalled QB with clean install, including using the Clean Install tool.
2. Repaired the installation
3. Re-registered QB in the registry using the reboot.bat tool in the QB folder.
4. Ran sfc /scannow -- no errors found

The problem is not the data file because I get the same response whether opening the data file or a sample data file. I confirmed this by installing QB2010 on my laptop and the program registered successfully and opened the data file with no problems.

The application event logs show these errors:

An unexpected error has occured in "QuickBooks Pro 2010": Connection Error:Invalid user ID or password

An unexpected error has occured in "QuickBooks Pro 2010": Connection String:CON=QBConnectionPool-Probe-QB_data_engine_20; ;DBF=C:\Users[my username]\Documents[data filename].QBW;ENG=QB_data_engine_20;DBN=df443c5d1bab473882f50ceca47a343a

An unexpected error has occured in "QuickBooks Pro 2010": DBConnPool::HandleConnectionError errorCode:-6069, dbCode:-103 from file:'..\src\ConnPool.cpp' at line 1036 from function:'DBMgr::DBConnPool::init'

An unexpected error has occured in "QuickBooks Pro 2010": QuickBooks has experienced a problem and must be shut down.

Faulting application name: qbw32.exe, version: 20.0.4017.807, time stamp: 0x510c5e5f Faulting module name: KERNELBASE.dll, version: 10.0.14393.187, time stamp: 0x57cf98b1 Exception code: 0xc000041d Fault offset: 0x000d96c2 Faulting process id: 0x3c04 Faulting application start time: 0x01d216bdb77c11e8 Faulting application path: C:\Program Files (x86)\Intuit\QuickBooks 2010\qbw32.exe Faulting module path: C:\Windows\System32\KERNELBASE.dll Report Id: bc8ee4f4-5ce5-4b18-a9a6-04833222760f Faulting package full name: Faulting package-relative application ID:

An unexpected error has occured in "QuickBooks Pro 2010": DBConnPool::HandleConnectionError errorCode:-6069, dbCode:-103 from file:'..\src\ConnPool.cpp' at line 1036 from function:'DBMgr::DBConnPool::init'

How can I fix this?

I had a user with the same problem you are facing. Win 10, QB 10, same DLL. I actually came across this when looking for a solution, but couldn't find anything specific for it online. the only clue I had is that she said it did updates last night, and didn't work today.

I had to roll back the Windows 10 to the previous build and it worked. I used the registry to set the network adapters to metered connections so it wont load updates. Its not a permanent fix, but they are going to upgrade their QB pretty soon now that this happened.