Microsoft errors can be tricky to understand, but each part of them does have a meaning.
The first 4 bits of an error typically only indicate 1 of 2 things. Is it Microsoft or a 3rd party. 8 means Microsoft and C means 3rd party, so we know this is a Microsoft issue. The next part 086 indicates would Microsoft refers to as the facility, or in plain english which component of Windows is causing the issue. Unfortunately Microsoft hasn't updated their error ref guide since 2024 and facility 86 isn't documented. The last part 0010 is the actual error occurring. The whole value is actually represented in hex so 10 in decimal is 16. That error means "The directory can not be removed". So something is trying to remove a directory and is failing. Likely a permission or something is in use that is trying to be removed.
You could search for and download 'procmon' and apply a filter to look for access denied messages, this may lead you to what can't be removed. Assumption is it's a failure of a local resource and not some network resource.