Installing a newer version of the SAP GUI over an older one without a clean uninstall can cause version mismatches. How to Fix sapbtmp.dll Errors 1. Re-register the DLL Manually
Check your Antivirus or Windows Defender "Protection History." If you see sapbtmp.dll listed as a blocked threat, restore the file and add the SAP installation folder to your . 3. Repair the SAP Installation Rather than a full reinstall, try the built-in repair tool: Go to Control Panel > Programs and Features . Find SAP GUI or SAP Business One in the list. Right-click and select Change or Repair . 4. Reinstall the SAP Client sapbtmp.dll
The Windows Registry might have an outdated path pointing to a version of the file that no longer exists. Installing a newer version of the SAP GUI