How to fix 7-Zip Add operation is not supported error

1. Start 7zFm.exe.


2. Up next, open the archive you want to add the file to in one panel.


3. In the other panel, just navigate to the specific file.


4. Select it and click onto 7-Zip’s toolbar with the target-archive already opened.


5. The file will be immediately added to the archive in the appropriate panel.

As simple as it may sound, the issue often arises when the user has not selected a file before trying to add it to the archive. Could this be your case as well?

Long story short, you need to first select it, then add it, or else you risk getting the same Operation is not supported error countless times.

If you need additional help, just refer to the above procedure.

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3. Change file permissions

The issue may simply be related to the permissions of the file. In order to confirm this possibility, right-click the file, choose Properties, then Security.

While here, make sure that you have the permissions to modify this file. You might also verify that you have the necessary permission on the directory.

That’s mandatory too since 7-Zip needs to create a new archive to complete the requested operation.

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Don’t have permission to save changes to this file? Count on us to solve the problem.

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4. Make sure that you drag and drop an unzipped file

You may encounter the Add Operation is not supported error when trying to transfer your favorite’s mod pack to the .jar file using 7-Zip.

Let us remind you of a nifty trick. Dragging and dropping the files from inside a .zip file isn’t possible. You just need to unzip it first and continue to be able to start the actual transfer.

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5. Check format compatibility

The program that you use does support a few compression algorithms including Bzip2, PPMd, Deflate64, and LZMA, yet it doesn’t do the same thing for write operations on all formats.

Unfortunately, there are plenty of formats for which it provides the Unpacking only options. More specifically, 7z, BZIP2, GZIP, TAR, XZ, ZIP, and WIM are marked as Packing/unpacking-compatible.

However, AR, ARJ, CAB, CHM, CPIO, CramFS, DMG, EXT, FAT, GPT, HFS, IHEX, ISO, LZH, LZMA, MBR, MSI, NSIS, NTFS, QCOW2, RAR, RPM, SquashFS, UDF, UEFI, VDI, VHD, VMDK, WIM, XAR, and Z can be used for Unpacking only.

These are some solutions that you might want to try when getting the 7-Zip Add Operation is not supported error.

Be sure to let us in the comments area below know which one fixed the problem for you.

 

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