https://openbusinesserp.com/enNew guides and releases of OpenBusinessERP.https://openbusinesserp.com/guides/e-invoicing-germany/https://openbusinesserp.com/guides/e-invoicing-germany/Wed, 04 Nov 2026 08:00:00 GMTReceiving since 1 Jan 2025, issuing from 2027/2028: the German B2B e-invoice timeline, XRechnung vs ZUGFeRD, and what OpenBusinessERP supports.https://openbusinesserp.com/guides/datev-export-accountant/https://openbusinesserp.com/guides/datev-export-accountant/Wed, 04 Nov 2026 08:00:00 GMTWhat the DATEV EXTF export and SAF-T file from OpenBusinessERP contain, what your accountant receives, and the limits stated plainly.https://openbusinesserp.com/guides/gobd-small-business/https://openbusinesserp.com/guides/gobd-small-business/Wed, 04 Nov 2026 08:00:00 GMTUnalterable, traceable, retained for 8 or 10 years: what the German GoBD expect from small firms, what a Verfahrensdokumentation is, and what software can and cannot do.https://openbusinesserp.com/guides/small-business-vat-exemption/https://openbusinesserp.com/guides/small-business-vat-exemption/Wed, 04 Nov 2026 08:00:00 GMTThe €25,000 and €100,000 thresholds, what an invoice must say, and how OpenBusinessERP sets up a VAT-exempt small business.https://openbusinesserp.com/guides/swiss-qr-bill/https://openbusinesserp.com/guides/swiss-qr-bill/Wed, 04 Nov 2026 08:00:00 GMTThe QR-bill replaced the orange and red payment slips in October 2022. QR-IBAN with QR reference, SCOR or no reference, and what the invoice slip in OpenBusinessERP does and does not do yet.https://openbusinesserp.com/guides/invoice-requirements-germany/https://openbusinesserp.com/guides/invoice-requirements-germany/Mon, 02 Nov 2026 08:00:00 GMTEvery item § 14 (4) UStG requires on an invoice, the small-amount rule up to €250 and the small-business note, and how OpenBusinessERP fills each field.https://openbusinesserp.com/guides/switch-from-excel/https://openbusinesserp.com/guides/switch-from-excel/Mon, 02 Nov 2026 08:00:00 GMTMove customers, suppliers, products, opening balances and open items into OpenBusinessERP with the CSV/XLSX import wizard. Templates included.https://openbusinesserp.com/changelog/#v18-1-0https://openbusinesserp.com/changelog/#v18-1-0Mon, 28 Sep 2026 08:00:00 GMTIn-app updates are now off by default. The Apply update button runs pip install --upgrade inside the environment the server runs from, so it is now switched off unless you set ALLOW_RUNTIME_UPGRADE=true in the server's environment and restart.https://openbusinesserp.com/changelog/#v18-0-0https://openbusinesserp.com/changelog/#v18-0-0Thu, 24 Sep 2026 08:00:00 GMTThe macOS installer is for Apple Silicon only. Both macOS files on the release page are built for it and nothing is published for Intel Macs; the download badge and the install guide now say so and point an Intel Mac owner at pip or Docker.https://openbusinesserp.com/changelog/#v17-5-0https://openbusinesserp.com/changelog/#v17-5-0Sat, 12 Sep 2026 08:00:00 GMTThe Windows installer now offers to continue when the old uninstaller fails instead of aborting, so a machine whose previous uninstaller hangs can still complete an upgrade.https://openbusinesserp.com/changelog/#v17-4-1https://openbusinesserp.com/changelog/#v17-4-1Fri, 11 Sep 2026 08:00:00 GMTApproving an invoice was writing "sent" instead of "approved", which blocked the Mark Paid button because it required the approved status. The service, the router description, the audit log and both test suites are corrected.https://openbusinesserp.com/changelog/#v17-4-0https://openbusinesserp.com/changelog/#v17-4-0Thu, 10 Sep 2026 08:00:00 GMTThe Windows desktop upgrade no longer freezes when a legacy uninstaller is still on disk. The old installer used ExecWait to run the previous uninstaller, which opened a visible window and waited for the user to interact with it before continuing, so a silent upgrade hung indefinitely; it now runs under nsExec with a five-minute timeout and no window.https://openbusinesserp.com/changelog/#v17-2-0https://openbusinesserp.com/changelog/#v17-2-0Wed, 09 Sep 2026 08:00:00 GMTThe macOS desktop build asked the system for a protection it had no identity to satisfy. Bundled PostgreSQL would not initialise, and the loader said a library and the process loading it have different team identifiers on a machine where neither carries one, which is library validation rather than the quarantine everybody reaches for first.https://openbusinesserp.com/changelog/#v17-1-0https://openbusinesserp.com/changelog/#v17-1-0Wed, 09 Sep 2026 08:00:00 GMTA printed invoice ignored the country it was going to. Post code before city is right for the German speaking countries and wrong for every party in the Australian, New Zealand, British, Indian and North American profiles we ship, and the formatter returns lines rather than fields now, since field order alone cannot say which parts share a line.https://openbusinesserp.com/changelog/#v16-8-2https://openbusinesserp.com/changelog/#v16-8-2Sat, 05 Sep 2026 08:00:00 GMTAnd 16.8.1 shipped with no desktop installers at all, which is fixed here in the machinery rather than in the product. The check that opens the built application ran all three of its legs against one port while the Windows helper process survives every stop signal available to it, so one process that would not die failed the whole job and took the four installers with it.https://openbusinesserp.com/changelog/#v16-8-1https://openbusinesserp.com/changelog/#v16-8-1Sat, 05 Sep 2026 08:00:00 GMTA patch release, and most of it is money. An invoice total was written for a reader and then read back as a number, so from a thousand upwards the field came up empty and nine thousand left the browser as nine, while a reader whose decimal mark is a comma lost the cents off every invoice at any size. A first boot told the user to add by hand what the seeder was about to write. The two seed reconcilers run from the data repair registry, which the application calls well before the seeder, so on a fresh data directory they met an empty table, read it as a database whose seed cannot be dated, and warned that the tax rates and the working calendars had to be entered manually.