When trying to add files of a package into the Software Catalog, all file types would add with the exception of .exe files and the SMP Console displayed the following message:
An error has occurred during uploading files to server. Check server logs for details.
The messages seen in the Log Viewer on the SMP are:
WebApi Controller failure.
The process cannot access the file '\\<NSserver>\SoftwareLibrary\3344e566-d700-4ea1-9eac-a3ed20e559e7\application.exe' because it is being used by another process.
Crowdstrike 6.33.14705 was installed. This issue has also been reported with MsSense.exe, a component of Microsoft Endpoint Detection and Response.
Uninstalling Crowdstrike and other offending AV including MS EDR, or placing Crowdstrike in monitoring mode resolved this issue.
NOTE: Was not able to disable Crowdstrike so it was uninstalled from the Notification Server. Also, the Crowdstrike logs didn't contain any information that helped troubleshoot this particular issue.
As a Workaround if it's possible to ZIP the package executable, and then import it - as once you upload the package - you will be prompted to extract the content and if you confirm extraction it would be able to save executable without CrowdStrike blocking the content.