A document template may be secured by Microsoft AIP addons, see the following for a brief explanation of Microsoft AIP

https://docs.microsoft.com/en-us/azure/information-protection/what-is-information-protection

When a template is protected, users within the trusted domain should be able to read the document. It is not equivalent to password protected the document which user or program accessing the document needs to provide a password.

Report Designer and Java report engine do not currently support this kind of document. The following error is thrown from Report Designer for example when processing the report

Location: Run Report

Exception stack:
Windward can not parse doc, ppt, or xls files. Please use docx, xlsx, or pptx (TemplateParseException)

AutoTag version: 16.4.0.45
Office: 16 (32-bit), WORD
Windows: Microsoft Windows NT 10.0.18362.0 (64-bit), GC memory: 65,015,528

Stack trace:
Exception: net.windward.format.TemplateParseException
Message: Windward can not parse doc, ppt, or xls files. Please use docx, xlsx, or pptx
Stack: at net.windward.xmlreport.ProcessReport.loadTemplate(InputStream file, Int32 type, DocHeader hdr, DocBody parentDoc, Boolean removeUnusedFormats, String encoding, String[] importStack, Boolean fromTag)
at net.windward.xmlreport.ProcessReport.processSetup(Int32 inputType)
at net.windward.xmlreport.ProcessReport.processSetup()
at net.windward.xmlreport.ProcessReport.getTemplateMetrics(InputStream file, Boolean quiet, Boolean ignoreTags)
at net.windward.api.csharp.Report.GetMetrics(Stream template, Boolean ignoreTags)
at AutoTagCore.net.windward.autotag.arrow.m.a(IWin32Window A0, String A1, DataSourceProfileCollection A2, List`1& A3, IList`1 A4)
at AutoTagCore.net.windward.autotag.controls.reports.d.a(d A0, IDocumentInfo A1, RunReportParams A2, RunReportVariables A_3)

Please also keep in mind that the same solution needs to be working on Linux operating system although additional infrastructure setup may require for example to allow the program running in Linux to access the Windows Active Directory