Rishabh, Thank you for your response. Here is the additional information you requested. The problem is very intermittent, around three times per day. The same document and settings that crash the first time will succeed on consecutive tries. I increased the installed memory to 16 GB, and it now crashes about once per day. I think I will run a check on the memory to look for flaws. Another user with an identical setup but only 8 GB does not have the problems of this user. The scanner is a Fujitsu fi-7160, which has a document feeder and no flatbed. The driver is TWAIN (ICA is Apple-only, if I'm not mistaken), dated 3/16/2015, version 9.28.3.0, signed Microsoft Windows Hardware Compatibility Publisher. The default settings were used for the scanning, which includes double-sided scanning, auto-detect color (the documents are black and white), 300 DPI, letter-size, optimize scanned PDF, make searchable (run OCR). The problem always seems to occur during OCR, and not during the scan itself; however, the user says that performing OCR as a manual second step is not an acceptable solution. ... View more