Hi Jawahar,
I am Sumit, an Independent Advisor and a 3 year Windows Insider MVP here to help.
Via https://flightsimulator.zendesk.com/hc/en-us/ar...
If you are experiencing slow download speed when downloading Microsoft Flight Simulator, please do the following:
In the Windows search bar, type Command and look for ‘Command Prompt’
In the menu select “Run as administrator”
Enter: netsh int tcp set global autotuninglevel=normal
Press enter
We also recommend doing the following:
Close the app and restart it rather than letting it hang. Note: the download will resume from where it left off (you will not have to download from the start again)
Avoid using WiFi when updating. Try using an ethernet cable instead.
Turn off any security software that may be interfering (UAC, Antivirus, Firewall).
Change the installation repository (from C: to D: for instance) or try creating a new installation folder in the drive of your choice (for instance create "MSFS" in your C: drive)