Before you begin troubleshooting, please restart your computer, install any pending Windows updates, and disable any active third-party antivirus or performance optimization software.
1. Manually addreplace OLMAPI32.DLL
When you encounter an OLMAPI32.dll error in Outlook 365, you need to add if missing or replace if corrupted the file. As for the storage path, the location of OLMAPI32.dll is as follows:C:\Program Files\Microsoft Office\root\Office16
Location of OLMAPI32.dll
Location of OLMAPI32.dll
So, go to another PC running the same Windows version lithuania mobile database and architecture > copy the DLL to an external flash drive > connect the drive to the problematic PC > move OLMAPI32.dll to the same path > reboot the computer for the changes to take effect.
2. Update Outlook
Launch Outlook, click the File menu in the upper-left corner, and then select Office Account .
Now click on Update Options and select Update Now from the list.
Install updates to fix OLMAPI32.dll errors
Wait until all pending updates are installed, then reboot your PC and check for improvements.
3. Rename OLMAPI32.DLL and perform online repair.