Fix 610 Error The buffer is invalid

Error Message: The buffer is invalid.
 
Solution: 

1. Ensure that your port speed is set to low in the modem properties.
 
2. In your "Port Settings", check that FIFO is not set to low.
 
3. Remove and install the dialer again.
 
4. Else, install RAS/DUN again.
 
5. You should then consult your computer manufacturer if the problem persists.

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