How can I avoid the need for Administra​tor rights for open registry key.vi

Question

Dear wire workers.
I would like to do an EXCEL export.
Therefore I like to check if EXCEL is installed or not.
I use 'open registry key.vi' and read out the Excel\InstallRoot.
If there is an installed EXCEL than I export the data using ActiveX.
Everything works like a charm with LV 8.5.
The problem I have is that 'open registry key.vi' useses RegOpenKeyExA from the Advapi32.dll.
RegOpenKeyEx does, in fact, create a non-existing key and returns 0 (ERROR_SUCCESS?).
LONG lRegResult = RegOpenKeyEx(HKEY_CLASSES_ROOT, m_RegSubKey, 0, KEY_QUERY_VALUE + KEY_WRITE, &hkRegistry);
Successfully opens or creates m_RegSubKey under HKEY_CLASSES_ROOT.
Is there a way aroun this call?
In fact you need administrator rights to do this call because of the try to write a non exsisting key.
In my case this avoids the EXCEL export and any kind of registry access from LabVIEW without administrator rights.
:-) Who the hell has done this ;-)
All ideas are welcome
With kind regards
Martin Kunze
KDI Digital Instrumentation.com
e-mail: [email protected]
Tel: [phone]

Answer 1

Hi Martin
Did you try to wire a "KEY_READ" constant to the security access mask input of the open registry key VI? I had a similar problem, if you just need to read a key or check if it's present use read access only, that should work.
Hope this helps,
Daniel