bsdtar in Windows 10: Why is a 9-year old data file "open"? AppData\Local\Microsoft\Internet Explorer\MSIMGSIZ.DAT

Question

I am testing the ability of tar in Windows 10 to be used to occasionally backup a copy of a User profile under C:\Users\Username in a script. But its utility is extremely limited unless there are some workarounds. I have successfully archived the Roaming and LocalLow portions, with some work(arounds).

But I do not see a way to have tar ignore errors and keep trudging through a large, mine-infested hierarchy of open files, locked files, and files without user permissions. I used --exclude pattern to avoid the errors. After several fits with several locked *.db files scattered through the AppData folder, I came across this enigma. C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\MSIMGSIZ.DAT throws

tar: Couldn't open C:/Users/Admin/AppData/Local/Microsoft/Internet Explorer/MSIMGSIZ.DAT: Permission denied tar: Error exit delayed from previous errors.

But why would that file be open? Its file date is 2013-06-06. M$ explains its purpose in this ancient blog entry from 2011. I checked permissions on the file, and Admin has full. It's not hidden or system or special in any way. I am not running IE. While its seemingly impossible for this file to be in use, it joins several others in the AppData hierarchy which are legitimately in use and which I have meticulously identified for adding to my excludes.

And so while I am working through the numerous kinks in my attempt at profile folder backup, here are a few commandlines that I've used to perform the backup to an F: drive. The numerous --exclude patterns are for working around "open" files which caused tar to exit.

tar -cvz --exclude "OTele" --exclude "OneDrive" --exclude *.dll --exclude "Catalog1.*" --exclude "SolutionPackages" --exclude "C:/Users/Admin/AppData/Local/Microsoft/Windows/*.*" --exclude "Notifications" --exclude "usrClass.*" --exclude "WindowsApps" --exclude "NvBackend" --exclude "NVIDIA Corporation" --exclude "C:/Users/Admin/AppData/Local/Packages" --exclude cache2 --exclude "VERIZON" --exclude "Zoom" --exclude "C:\Users\Admin\AppData\Local\Temp" --exclude *.tmp --exclude *Cache* --exclude *Temp* --exclude "Old Firefox Data" -f f:\appdata-local.tar.gz "C:\Users\Admin\AppData\Local" (It saves about 200MB of archive before failing)

Here is sample output from trying just this one problematic IE folder:

F:\>tar -cvz -f f:\appdata-local-IE.tar.gz "C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer"
tar: Removing leading drive letter from member names
a Users/Admin/AppData/Local/Microsoft/Internet Explorer
a Users/Admin/AppData/Local/Microsoft/Internet Explorer/brndlog.bak
a Users/Admin/AppData/Local/Microsoft/Internet Explorer/brndlog.txt
a Users/Admin/AppData/Local/Microsoft/Internet Explorer/CacheStorage
a Users/Admin/AppData/Local/Microsoft/Internet Explorer/DomainSuggestions
a Users/Admin/AppData/Local/Microsoft/Internet Explorer/DOMStore
a Users/Admin/AppData/Local/Microsoft/Internet Explorer/EmieBrowserModeList
a Users/Admin/AppData/Local/Microsoft/Internet Explorer/EmieModeList
a Users/Admin/AppData/Local/Microsoft/Internet Explorer/EmieSiteList
a Users/Admin/AppData/Local/Microsoft/Internet Explorer/EmieUserList
a Users/Admin/AppData/Local/Microsoft/Internet Explorer/EUPP
a Users/Admin/AppData/Local/Microsoft/Internet Explorer/ie4uinit-ClearIconCache.log
a Users/Admin/AppData/Local/Microsoft/Internet Explorer/ie4uinit-show.log
a Users/Admin/AppData/Local/Microsoft/Internet Explorer/ie4uinit-UserConfig.log
a Users/Admin/AppData/Local/Microsoft/Internet Explorer/IECompatData
a Users/Admin/AppData/Local/Microsoft/Internet Explorer/IEFlipAheadCache
a Users/Admin/AppData/Local/Microsoft/Internet Explorer/imagestore
a Users/Admin/AppData/Local/Microsoft/Internet Explorer/Indexed DB
tar: Couldn't open C:/Users/Admin/AppData/Local/Microsoft/Internet Explorer/MSIMGSIZ.DAT: Permission denied
tar: Error exit delayed from previous errors.

Does anyone know how to either:

1. Force tar to ignore permission denied errors
2. Determine aforehand which files will cause the errors and then feed that list to tar?