The error message you are encountering while trying to add the Solver add-in in Excel 365 suggests that Excel is having trouble accessing or locating the Solver.xlam file, which is an add-in file required for Solver to function properly. To resolve this issue, you can try the following steps:
- Ensure Solver Add-In is Installed: First, make sure that the Solver Add-In is installed on your system. Solver is not included in Excel by default, and you may need to install it separately. Here's how:
- Go to "File" > "Options."
- In the Excel Options dialog, select "Add-Ins" on the left.
- In the Manage box, ensure "Excel Add-ins" is selected, and click "Go."
- Check the "Solver Add-in" option, and click "OK" to install it.
- Locate the Solver.xlam file (usually in the path C:\Program Files\Microsoft Office\root\Office16\Library\SOLVER).
- Move the Solver.xlam file to your Excel Add-Ins folder. You can usually find this folder at C:\Users\[Your Username]\AppData\Roaming\Microsoft\AddIns. If the Add-Ins folder doesn't exist, you can create it.
After trying these steps, you should be able to add the Solver Add-In to Excel without encountering the "Microsoft Excel cannot access the file solver.xlam" error.
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