Installing TIA Portal (e.g., v15 or v17) on a machine that already has STEP 7 v5.x can overwrite or modify registry keys required by SIMATIC Manager.
If running as admin doesn't work or isn't preferred, clearing local virtualized registry keys often fixes the pathing issue. Open the Registry Editor ( regedit ). Navigate to and delete the following keys if they exist: HKEY_USERS\>UserSID_Classes\VirtualStore HKEY_CURRENT_USER\Software\Classes\VirtualStore . cannot find language resource file s7yomlr.dll
If running as administrator does not work, a clean reinstallation of the specific Step 7 version is often required: Step 7 v5.x. your computer. Step 7 v5.x. Launch the application as an Administrator Siemens SiePortal Why This Happens Software Conflict Installing TIA Portal (e
: Siemens experts recommend updating your Step 7 version to the latest service pack and hotfix (e.g., v5.6 SP2 HF3 or later). You can find these on the Siemens Industry Online Support (SIOS) portal Reinstallation Fix Navigate to and delete the following keys if