Try to rename the data directory in the same drive as the portable executable, it's "
ElectronCash_data", rename it into "
ElectronCash_data_backup" or similar.
That should clear the data directory; then try to open Electrum 4.0.3.
If it opened, restore your wallet using the seed phrase.
What operating system are you running? Newer versions of Electrum have some issues with older versions of Windows, as per the electrum download page:
Old versions of Windows might need to install the KB2999226 Windows update.
I am using WINDOWS 7 . Maybe that's why it is giving problem . Should I try it on my Android phone as said above ?
If it's an old non-updated version of Windows7, and it's labeled as "
Windows 7 Service Pack 1" in Properties of "
My Computer",
then try to download and install the said update, it's mostly required by most app, not just Electrum and you might need it in the future.
Make sure to select the correct version to install:
support.microsoft.com/en-us/help/2999226Specifically, one of these:
All supported x86-based versions of Windows 7
All supported x64-based versions of Windows 7
You can find if your PC is x64 or x86 (32-bit) in the same window where you can find the Windows version and service pack.
The installer will also detect if you already have it in your PC.