Steps to reproduce:

1. In Notepad++, go to a line that contains many characters (thousands, I was trying to edit an html file)
2. Observe that NVDA hangs / crashes. Notepad++ itself does not crash, but NVDA stops speaking.
3. Try going to the desktop and restarting NVDA, e.g finding the icon and pressing enter

Alternatively, reproduce #12125. This happened to me a few days ago, and it also caused similar symptoms.

Actual behavior:

NVDA is unable to restart. That's my guess because there is no speech at all even after trying to press enter several times on the icon.

I was only able to get speech back by restarting the entire machine.

Unfortunately, there are no log entries in nvda-old.log that would explain the crash, everything that I see there is well before the time the crash happened.

There is also no crash dump in the %temp% folder.

Expected behavior:

NVDA should ideally not even be crashing. But failing that, it should not crash so badly that a full restart of the machine is required for recovery.

System configuration

NVDA installed/portable/running from source:

Installed

NVDA version:

alpha-24876,2325be89

Windows version:

10.0.19044.1526

Name and version of other software in use when reproducing the issue:

Notepad++ 8.3.2

Other information about your system:

Other questions

Does the issue still occur after restarting your computer?

Yes, I have seen this happen multiple times

Have you tried any other versions of NVDA? If so, please report their behaviors.

No

If NVDA add-ons are disabled, is your problem still occurring?

Does the issue still occur after you run the COM Registration Fixing Tool in NVDA's tools menu?