0x88980406 SyncFlush() ...Is there a workaround?

In my case it turned out the application in question was already pressing up on memory limits of its specced hardware. Any time I added code that used a decent amount of memory this would crop up.

I ended up using a MemoryFailPoint mechanism when I implemented a feature that placed processing an image buffer on another thread.

https://docs.microsoft.com/en-us/dotnet/api/system.runtime.memoryfailpoint

First implementation did the trick but after many tries QA caused a OOM bomb. So I implemented a MemoryFailPoint() with GC.Collect() loop (hackish I know...but sometimes...get er done).

The main things I learned were:

1. This is a really bad bug in WPF.
2. You only have to worry about it if you have truly consumed an inordinate amount of memory.

This is old, but I will answer anyways, since I had the same issue that I just resolved.https://stackoverflow.com/a/18003004/1415307

Basically, my issue with this error came down to an outdated video card driver. After updating to the newest driver, the issue has been resolved.