What this means
This error almost always means Windows does not have a default printer set. It happens a lot on new PCs or after big updates.
Quick fix if you already have a printer
1.Press Windows + I to open Settings.
2.Windows 11: go to Bluetooth & devices > Printers & scanners.
3.Windows 10: go to Devices > Printers & scanners.
4.Turn OFF “Let Windows manage my default printer.”
5.Click your printer, click Manage (if shown), then click Set as default.
6.Close Settings and open BLS-2026 again.
If you do not use a physical printer
You still need a printer driver for reports to work.
1.Go to Settings > Printers & scanners.
2.Click Add device (or Add a printer or scanner).
3.Choose a built-in printer like “Microsoft Print to PDF” (or “Microsoft XPS Document Writer”).
If you don’t see it, click “The printer that I want isn’t listed” and pick it from the list.
4.After it’s added, click it, choose Manage, then Set as default.
5.If asked to print a test page, choose No.
6.Open BLS-2026 again.
If the error returns
•Repeat the steps and re-set a default printer (Windows can “forget” it).
•Restart the computer after setting the default printer.
•Make sure your real printer’s drivers are installed if you use one.
Why this works
BLS-2026 uses Windows’ printer system to create and preview reports. A default printer (real or virtual) must be set, even if nothing is physically connected.