Summary
Learn how to fix the 'Cannot open file C:\Users\....\AppData\Local\Temp\.. The process cannot access the file because it is being used by another process' error when running any report or printing any document/report, in Sage 200 Evolution.
Description
The following error message may display when running any kind of report or printing any document/report.

Resolution
Consider the following advice to resolve the above error:
A. Delete Registry Editor Key
Delete the local agent’s Registry Editor Key folder on the local PC.
If working in a RDP environment, find the relevant agent folder in the Registry Editor, and do the same.
Open this link for a detailed article on how to delete the agent's Registry Editor Key.
B. Give Full Control to the Windows user's folder
Request assistance of your local IT technician to do the following:
Add Full Control (full Read and Write) permissions for the relevant user mentioned in the above error (e.g., Garth (in this case), on the Security tab of the Users folder's Properties screen.