I am not sure how you are opening the Excel file; I tested it on my system, and I open a file, write in a cell, save, and exit with no problems.
Can you share how you open the file?
This is my example:
![915.png 915.png](/t5/image/serverpage/image-id/1130iF8B14247E77CE6B3/image-size/large?v=v2&px=999)
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Luis Lopez
Customer Support Engineer English and Spanish
Blue Prism Ltd
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